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JW Marriott San Francisco Union Square
515 Mason Street, San Francisco, CA, USA, 94102
About us
An iconic hotel in an indelible gateway city, JW Marriott San Francisco Union Square is a sought-after destination for convention attendees, business travelers and leisure guests alike. From the moment of arrival, guests will be immersed in the architecturally stunning style and world-class service that distinguishes the hotel. For those seeking convenience, Moscone Center, Market Street, the Financial District and the shops and restaurants on Union Square are only minutes away.Following a multi-million dollar renovation, our updated event spaces and accommodations celebrate the hotel’s iconic architecture and history. Dedicated event planners and our inspired catering team ensure every event – whether a business meeting, conference, social soirée or wedding – leaves your guests feeling richer than when they arrived.Featuring 16,648 square feet of distinct, modern indoor and outdoor space, warm and personalized service, exceptional dining experiences and inspired accommodations, our luxury Union Square hotel offers the perfect setting for your next meeting or event.
Venue Details
ChainMarriott Bonvoy
BrandJW Marriott
Built1987
Renovated2019
Total meeting space12,242 sq. ft.
Guest Rooms344
Venue typeHotel
Industry Ratings
Forbes Travel Guide
AAA
Northstar
Awards
Industry awards
Forbes Recommended - 2025
AAA 4 Diamond
Forbes Recommended - 2024
Forbes Top 10 in San Francisco for Business Travelers
Ranks #1 across entire JW Brand in Event Planning
Amenities
Room features and guest services
- Calls (local)
- Calls (toll-free)
- Laundry service
- Luggage storage
- Room service
- View (urban)
- Voicemail box
Facilities
- Onsite catering
- Onsite gift shop
- Onsite restaurant
- Onsite security
- Pet friendly
- Rental car service
- Space (outdoor)
- Space (private)
- Space (semi-private)
- Wheelchair accessible
Business services
- AV capabilities
- Business center
- Video conference
Recreational activities
- Health club
- Spa or salon
Transportation
- Bus
- Subway
- Taxi
- Train
Equipment
- Dance floor
- Loading dock
- Portable walls
- Staging area
AV capabilities
- AV equipment
- High speed internet
- Onsite AV staff
Room features and guest services
- Calls (local)
- Calls (toll-free)
- Laundry service
- Luggage storage
- Room service
- View (urban)
- Voicemail box
Facilities
- Onsite catering
- Onsite gift shop
- Onsite restaurant
- Onsite security
- Pet friendly
- Rental car service
- Space (outdoor)
- Space (private)
- Space (semi-private)
- Wheelchair accessible
Meeting rooms
Total meeting space
12,242 sq. ft.
Largest room
4,352 sq. ft.
Space (private)
15,000 sq. ft.
Meeting rooms
15
Second largest room
2,074 sq. ft.
Space (semi-private)
2,000 sq. ft.
Space (outdoor)
600 sq. ft.
Meeting rooms
Total meeting space
12,242 sq. ft.
Largest room
4,352 sq. ft.
Space (private)
15,000 sq. ft.
Meeting rooms
15
Second largest room
2,074 sq. ft.
Space (semi-private)
2,000 sq. ft.
Space (outdoor)
600 sq. ft.
Floor Plans
Download floor plans for this venue.
Explore Meeting Rooms
Find the perfect room with setup charts and interactive 3D floor plans.
Meeting space
Name | Room size | Ceiling height | Maximum capacity | U-Shape | Banquet rounds | Theater | Classroom | Boardroom |
|---|---|---|---|---|---|---|---|---|
4,352 sq. ft. 64 x 68 sq. ft. | 12.5 ft. | 400 | 64 | 330 | 400 | 234 | 60 | |
2,074 sq. ft. 61 x 34 sq. ft. | 12.5 ft. | 218 | 57 | 150 | 218 | 104 | 58 | |
1,088 sq. ft. 32 x 34 sq. ft. | 12.5 ft. | 96 | 30 | 80 | 96 | 66 | 30 | |
986 sq. ft. 29 x 34 sq. ft. | 12.5 ft. | 118 | 30 | 80 | 118 | 66 | 30 | |
2,074 sq. ft. 61 x 34 sq. ft. | 12.5 ft. | 218 | 57 | 150 | 218 | 104 | 58 | |
499 sq. ft. 27 x 19 sq. ft. | 9 ft. | 50 | 24 | 40 | 50 | 30 | 24 | |
352 sq. ft. 24 x 15 sq. ft. | 9 ft. | 40 | 15 | 30 | 40 | 24 | 16 | |
315 sq. ft. 21 x 15 sq. ft. | 9 ft. | 28 | 14 | 20 | 28 | 18 | 16 | |
252 sq. ft. 21 x 12 sq. ft. | 9 ft. | 10 | - | 10 | - | - | 10 |
Guest rooms
Total guest rooms
344
Suites
78
Tax rate
3.5%
Occupancy rate
14%
Total guest rooms
344
Suites
78
Tax rate
3.5%
Occupancy rate
14%
Location
Getting Here
Distance from airport
20 mi
Distance from airport 20 mi
Parking in the area
Parking in the area
Valet parking
Local Attractions
Golden Gate Bridge
Historical landmark
20 mins
The Golden Gate Bridge is a suspension bridge spanning the Golden Gate strait, the one-mile-wide, one-point-seven-mile-long channel between San Francisco Bay and the Pacific Ocean. The Bridge connects the northern tip of San Francisco to Marin County.
N/A
Visit website
Alcatraz Island
Historical landmark
30 mins
Alcatraz Island is located in the San Francisco Bay. The small island was developed with facilities for a lighthouse, a military fortification, a military prison , and a federal prison from 1934 until 1963. In 1972, Alcatraz became part of a national recreation area and received designation as a National Historic Landmark in 1986.
Today, the island's facilities are managed by the National Park Service as part of the Golden Gate National Recreation Area; it is open to tours. Visitors can reach the island by ferry ride from Pier 33, near Fisherman's Wharf, San Francisco.
N/A
Visit website
Cable Cars/Powell Street
Historical landmark
5 mins
At Powell and Market streets, there is a cable car turntable which serves as the beginning stop for two lines, the Powell-Mason and Powell- Hyde lines. The Powell-Mason line begins at the Powell/ Market turntable, and the line runs from there up and over Nob Hill and down to Bay Street at Fisherman's Wharf.
Powell & Market Streets
Visit website
Fisherman's Wharf
Recreation
15 mins
Fisherman's Wharf is a neighborhood and popular tourist attraction in San Francisco, California. It roughly encompasses the northern waterfront area of San Francisco from Ghirardelli Square or Van Ness Avenue east to Pier 35 or Kearny Street.
100 Jefferson Street
San Francisco, CA 94133
Visit website
Chinatown
Recreation
10 mins
The Chinatown centered on Grant Avenue and Stockton Street in San Francisco, California, is the oldest Chinatown in North America and the largest Chinese enclave outside Asia. It is the oldest of the four notable Chinatowns in the city. Since its establishment in 1848, it has been highly important and influential in the history and culture of ethnic Chinese immigrants in North America. Chinatown is an enclave that continues to retain its own customs, languages, places of worship, social clubs, and identity.
N/A
Visit website
Embarcadero Center/Ferry Terminal
Recreation
15 mins
The San Francisco Ferry Building is a terminal for ferries that travel across the San Francisco Bay, a food hall and an office building. It is located on The Embarcadero in San Francisco, California.
1 Ferry Building
San Francisco, CA 94111
Visit website
Napa Valley Wine Country
Recreation
60 mins
The Wine Country is an area of Northern California in the United States known worldwide as a premium wine-growing region. Viticulture and wine-making have been practiced in the region since the mid-19th century. There are over 400 wineries in the area north of San Francisco, mostly located in the area's valleys, including Napa Valley in Napa County. Cities and towns associated with the Wine Country include Santa Rosa, Healdsburg, Sonoma, Kenwood, Petaluma, Sebastopol, Guerneville, Windsor, Geyserville, and Cloverdale in Sonoma County; Napa, Yountville, Rutherford, St. Helena and Calistoga in Napa County; and Hopland and Ukiah in Mendocino County.
N/A
Visit website
Oracle Park - home of MLB San Francisco Giants
Recreation
20 mins
Oracle Park is a baseball park located in the South Beach neighborhood of San Francisco, California. Since 2000, it has served as the home of the San Francisco Giants, the city's Major League Baseball (MLB) franchise. Originally named Pacific Bell Park, then SBC Park in 2003 after SBC Communications acquired Pacific Bell, the stadium was ultimately christened AT&T Park in 2006 following SBC's buyout of AT&T.
24 Willie Mays Plaza
San Francisco, CA 94107
Visit website
Moscone Center
Convention center
10 mins
Moscone Center is the largest convention and exhibition complex in San Francisco, California. It comprises three main halls: Two underground halls underneath Yerba Buena Gardens, known as Moscone North and Moscone South, and a three-level Moscone West exhibition hall across 4th Street.
747 Howard Street
San Francisco, CA 94103
Visit website
Financial District
Business district
10 mins
The Financial District is a neighborhood in San Francisco, California, that serves as its main central business district. It is home to the city's largest concentration of corporate headquarters, law firms, insurance companies, real estate firms, banks, savings and loans, and other financial institutions. All six San Francisco Fortune 500 companies—McKesson, Wells Fargo, PG&E, Gap, Charles Schwab, and Salesforce.com—are located in the district.
N/A
Union Square
Shopping
5 mins
Union Square is a 2.6-acre public plaza bordered by Geary, Powell, Post and Stockton Streets in downtown San Francisco, California. "Union Square" also refers to the central shopping, hotel, and theater district that surrounds the plaza for several blocks. This one-block plaza and surrounding area is one of the largest collections of department stores, upscale boutiques, gift shops, art galleries, and beauty salons in the United States, making Union Square a major tourist destination, a vital, cosmopolitan gathering place in downtown San Francisco, and one of the world's premier shopping districts
N/A
Civic Center
Historical landmark
15 mins
The Civic Center in San Francisco, California, is an area of a few blocks north of the intersection of Market Street and Van Ness Avenue that contains many of the city's largest government and cultural institutions. It has two large plazas (Civic Center Plaza and United Nations Plaza) and a number of buildings in classical architectural style.
Market & Van Ness
Nearby vendors
Promoted
Wine Country Trekking
San Francisco
Wine Country Trekking provides guided hikes in the beautiful wine country of California including Napa and Sonoma Valleys. These experiences include walking in the vineyards, amongst ancient redwood trees and oak groves with a curated wine country lunch and visits to iconic wineries for superb wine tasting experiences. In addition to our guided day hikes we provide luxury self-guided inn-to-in walking vacations from the gateway City of San Francisco to the California wine country with a focus on superb hiking, lodging, food and wine. We also have a Monterey Bay Trek.
Activity
Visit Profile
ilixr Creative
Multi-city
Our mission is to provide one-of-a-kind culinary experiences that leave you and your guests with lasting memories and satiated palates. Every detail is meticulously thought out, and our commitment to hospitality, with over 40 years of experience working in some of the world's most acclaimed restaurants, brings a level of excellence rarely found in the catering industry.
Activity
Catering
Visit Profile
Promoted
Twin Spin Entertainment
Multi-city
We are a full service DJ/MC, Karaoke, AV Rental, Photo Booth and Lighting company based in the San Francisco Bay Area. We specialize in corporate events and weddings and have been serving the Bay Area since 1995. Some of our clients include: TikTok, Cisco, Apple, Intel, Amazon, Southwest Airlines, Sony, Meta, Paypal and more.
Hired Entertainment
Logistics/Decor
Visit Profile
Insider Experience
Multi-city
Your Premier USA DMC Partner
At Insider Experience, we create seamless, unforgettable events with exclusive access to premium venues, world-class entertainment, and VIP sporting experiences. With over 20 years of expertise, we handle every detail behind the scenes, ensuring a flawless, five-star experience.
Planners value our quick response times, all-inclusive budget turnarounds, strong industry relationships, and operational precision. We operate across the U.S. in key destinations such as Hawaii, Los Angeles, San Francisco, San Diego, Orange County, Las Vegas, New York, and Miami. Our global offices enable us to efficiently serve both U.S. and international clients across multiple time zones.
Let’s craft something extraordinary together—contact us today!
Activity
Amenities/Gifting
Logistics/Decor
+3
Visit Profile
Culture.fun
Multi-city
Inspire a warm and welcoming company culture conducive to employee retention and productivity. We help you build a fun, friendly, and innovative company environment. We focus on the goals of your business and your unique organizational personality, to help you build a positive and motivating workplace environment.
Activity
Catering
Logistics/Decor
Preferred staff
Visit Profile
Tallen, Inc
Multi-city
Tallen is a nationwide leader in audio-visual production and event technology. We provide full-service AV solutions — from creative design and state-of-the-art equipment to expert technical support — for conferences, meetings, and live events of all sizes. With a dedicated team and a coast-to-coast network, we deliver consistent, high-quality experiences while helping clients save time and costs. Trusted by top organizations across all industries, Tallen brings visions to life and ensures every event creates lasting impact.
Logistics/Decor
Preferred staff
Visit Profile
TeamWorx
Multi-city
TeamWorx is based just outside silicon valley California and specializes in team building events for tech companies and tech employees, engineering companies and engineers, and groups looking for robotic themed events. Our signature Robot Team Building events are Robot Build and Battle 1, Robot Build and Battle 2, and our newest addition, Robot Racing! We deliver events for large groups anywhere in the United States: Robot Build and Battle 1 up to 300 people, Robot Build and Battle 2 up to 500 people, Robot Racing up to 200 people, and combine 1 & 2 for up to 800 people!
Activity
Visit Profile
Mosaic Global Transportation
Multi-city
Luxury Rides. Legendary Service. Logistics Without Limits.
Mosaic Global Transportation is a boutique, minority-owned ground transportation company with 23+ years of experience moving people seamlessly across California—and beyond. With fleet and operations in both Northern and Southern California, we specialize in high-touch service for airport transfers, corporate events, VIP programs, and large-scale productions.
We’re not just another ride service—we’re logistics partners. Our team has managed transportation for Super Bowl 50 and 60, top tech firms, global summits, and everything in between. Whether it’s one executive or 10,000 guests, we deliver an unmatched experience.
Clean, modern vehicles (black car to motorcoach)
Wi-Fi, power outlets & chauffeur tracking
Real-time updates & booking flexibility
24/7 in-house dispatch (no bots here)
Dedicated account managers for every client
When the stakes are high, choose the team that treats your transportation like it matters.
Welcome to Mosaic. Let’s move greatness.
Transportation
Visit Profile
SPIN San Francisco
San Francisco
At SPIN, we come together to socialize and celebrate play. At our core is the drive to connect through ping pong—a game that transcends age, gender, ethnicity, and all physical boundaries. We are the original ping pong social club, your offline social network, a place to call home. We welcome diversity and embrace the unconventional. With venues in New York, Chicago, San Francisco, Toronto, Philadelphia, Seattle, Washington DC and Boston we encourage you to participate. Do it together and never alone.
Activity
Visit Profile
Hard Rock Cafe San Francisco
San Francisco
Hard Rock Cafe San Francisco
Established September 10, 1984
Hard Rock Cafe on Pier #39 is here to make your trip rock! The Cafe is located next to the Bay’s waterfront, is full of rock-n-roll memorabilia and features a savory menu as the cherry on top. We are conveniently located at the entrance to Pier 39, directly across from the F-Line trolley, Uber/Lyft/Taxi zone, bus loading zone and Pier 39 parking garage. Let us welcome you to Pier 39 by stopping for a quick bite before or after your adventures. Hard Rock is so much more than just a cafe! You can explore our Rock Shop® for some great gifts and souvenirs or check out all of our rock-n-roll memorabilia. You are sure to leave with an unforgettable memory. Rock on Hard Rock family, we’ll see you soon!
Restaurant/Bar
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Additional Information
Safety Information
Cancellation Policy
72 Hours
Additional details
16,648 square feet of distinct, modern indoor and outdoor space.
Venue resources
JW Marriott San Francisco Union Square Frequently Asked Questions
Explore frequently asked questions from the JW Marriott San Francisco Union Square regarding Health and Safety, Sustainability, and Diversity and Inclusion
Sustainable Practices
Please provide comments or a link to any publicly communicated JW Marriott San Francisco Union Square's sustainability or social impact goals/strategy.
Please visit Marriott.com/Serve360 for Marriott International's sustainability & social impact strategy and 2025 goals information.
Does JW Marriott San Francisco Union Square have a strategy that focuses on the elimination and diversion of waste (i.e. plastics, papers, cardboard, etc.)? If yes, please elaborate on your strategy of elimination and diversion of waste.
Yes, Paper,Newspaper,Cardboard,Mixed,Aluminum,Other Metals,Plastic,Glass,Cooking Oil,Universal Waste Recycling (batteries, light bulbs, paint),Food Packaging
Diversity and Inclusion
For US hotels only, is JW Marriott San Francisco Union Square and/or parent company certified as a 51% diverse owned business enterprise (BE)? If yes, please indicate which one of the following you are certified as:
No response.
If applicable, could you please provide a link to JW Marriott San Francisco Union Square's public report on their commitments and initiatives related to diversity, equity, and inclusion?
https://www.marriott.com/diversity/diversity-and-inclusion.mi
Health and Safety
Were practices at JW Marriott San Francisco Union Square developed based on health service recommendations from public governmental entities or private organizations? If Yes, please list which organizations were used to develop these practices.
Yes, Marriott cares greatly about every guest's experience and takes hygiene and sanitation very seriously. Marriott has established strict standards of cleanliness for all of its hotels that either meet or exceed public health department regulations.
Does JW Marriott San Francisco Union Square clean and sanitize public areas and publicly accessible facilities (i.e. meeting rooms, restaurants, elevator banks, etc.)? If yes, describe any new measures that are taken.
Yes, Marriott cares greatly about every guest's experience and takes hygiene and sanitation very seriously. Marriott has established strict standards of cleanliness for all of its hotels that either meet or exceed public health department regulations.
Please explain, if applicable, the carbon offsetting options you offer to corporations.
The corporate sustainability team can help to offset customers' carbon footprints by contacting Sustainability@marriott.com.
Please provide, if applicable, an e-mail address for a contact who can address any follow up questions relating to sustainability and social impact goals and initiatives.
sustainability@marriott.com
Has your hotel taken steps to reduce single-use plastics, such as removing plastic straws (except upon request for guests with disabilities), stirrers and cotton buds? If yes, please provide detail as to the steps you have taken to reduce single use plastics?
Yes, Eliminated straws and stirrers; implemented large format bath amenities
Does your hotel generate (onsite) or purchase (offsite) renewable energy (beyond your utility's standard offerings)? If yes, please describe your practices for generating or purchasing renewable energy.
Does your hotel engage in activities to protect & restore the natural environment in which it is located (i.e. trees planted, coral reef restored, etc.)?
Will your hotel be imposing any additional fees for cleaning services? If yes, please specify those fees.
No
Are specific cleaning/disinfection routines in place for pillows, duvets and their covers, headboard, bathrobe etc.? If yes, please describe.
Yes, Hotels following MI Cleaning Protocals
Please include a link to your public report on community impact if applicable.
Please visit Marriott.com/Serve360 for the latest progress on Marriott International's community engagement efforts.
Please provide any other comments you wish to make regarding your efforts/initiatives to obtain certification in these programs.
https://www.marriott.com/diversity/diversity-and-inclusion.mi
Please provide, if applicable, an e-mail address for a contact who can address any follow up questions relating to diversity, equity, and inclusion.
WEGD@marriott.com
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