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The Royal Sonesta Washington, DC Capitol Hill

20 Massachusetts Avenue NW, Washington, DC, USA, 20001
Venue image
3D

About us

HOTEL OVERVIEW Newly opened in September 2023, The Royal Sonesta Washington, DC Capitol Hill showcases a striking glass façade, a dramatic 10-story atrium, and a curated collection of commissioned artwork. Ideally located just steps from Washington, DC’s most iconic landmarks—including the White House, the Monuments and Memorials, and the Smithsonian—our hotel offers a refined retreat in the heart of the capital. Relax in plush rooms and suites designed in soothing hues, and enjoy an array of upscale amenities, from a state-of-the-art fitness center and yoga studio to a stunning penthouse conference center and more. THE MASCOT The Knight of Capitol Hill, a beaver native to the Potomac, symbolizes our neighborhood’s history and spirit. Revered for its engineering skills and unwavering perseverance, the beaver embodies the teamwork we cherish at the Royal Sonesta Washington, DC Capitol Hill. MEETINGS & EVENTS From stylish ballrooms to our breathtaking penthouse, discover the perfect venue for any event in Washington, DC. Whether you're organizing a corporate meeting or planning a sophisticated wedding, The Royal Sonesta Washington, DC Capitol Hill is here to help you craft an unforgettable experience. GUEST ROOMS & SUITES Our guest rooms and suites feature refined design in calming tones and range from 405 to 760 square feet, offering plush accommodations with views of the vibrant Atrium Gallery or sweeping cityscapes. All accommodations include spa-inspired bathrooms with rainfall showers and full-size anatomical toiletries, along with modern in-room technology for comfort and convenience. Guest rooms offer either a king-sized bed or two queen beds and feature a 65-inch HDTV with webcasting. Suites provide elevated comfort with a separate living area, a king-sized bed, a dining table for six, a sofa bed, and enhanced amenities such as Marshall speakers and in-room bar service—ideal for entertaining or unwinding in style. The Royal Sonesta Washington, DC Capitol Hill is committed to ensuring a comfortable and inclusive stay for all guests. Our mobility-accessible rooms feature widened doorways, a lowered peephole, and roll-in showers with grab bars. DINING Step into Paris from the streets of Capitol Hill. Bistro du Jour delights patrons with timeless classics such as Coq au Vin and Croque Madame, paired with a curated selection of bubbly and artisanal cocktails. A taste of Parisian elegance awaits. Open for Breakfast, Weekend Brunch, Lunch, Dinner & Happy Hour! Room Service is available. SUSTAINABILITY Nestled within the vibrant heart of Capitol Hill, our award-winning hotel resides at 20 Mass, a cutting-edge mixed-use destination. Designed with sustainability in mind, the building boasts: • LEED Gold Certification • WELL Core and Shell • VRF DOAS Heating/Cooling System • 2 400kW Natural Gas Generators • Vegetated Green Roof with Trellis AMENITIES The Royal Sonesta Washington, DC Capitol Hill offers a thoughtful collection of amenities designed to enhance every stay. Guests can enjoy pet-friendly accommodations, high-speed Wi-Fi, and a prime, centrally located setting with convenient valet parking and EV charging. Wellness-focused offerings include a state-of-the-art fitness center and dedicated yoga studio, while an on-site restaurant provides a refined dining experience. The hotel also features versatile event venues, Sonesta Work Suites for productivity on the go, and a strong commitment to sustainability and accessibility—ensuring a seamless, comfortable, and inclusive experience for all travelers.

Venue Details

ChainSonesta
BrandRoyal Sonesta
Built2023
Renovated2023
Total meeting space11,000 sq. ft.
Guest Rooms274
Venue typeHotel

Awards

Industry awards
2025 Magellan Award Gold Winner in the category of Overall Eco-Friendly “Sustainable” Resort/Hotel

Venue Highlights

3D Event Space
Cvent Photo-realistic 3D Event Spaces give planners the ability to realize their vision down to the finest detail.

Amenities

Room features and guest services

  • Calls (local)
  • Concierge services
  • Internet access
  • Luggage storage
  • Room service
  • View (urban)
  • Voicemail box

Facilities

  • Onsite catering
  • Onsite restaurant
  • Onsite security
  • Pet friendly
  • Space (outdoor)
  • Space (private)
  • Space (semi-private)
  • Wheelchair accessible

Need dates

Priority windows that venues prefer for hosting events

Jun 1, 2026 - Sep 7, 2026
Oct 16, 2026 - Dec 31, 2026

Seasonal Availability

Match your event dates with this hotel’s availability. Low seasons tend to have better availability.
High season
Sep 08 - Nov 20Mar 16 - Jun 30
Shoulder season
Low season
Jan 01 - Mar 15Nov 21 - Dec 31Jul 01 - Sep 07

Meeting rooms

Total meeting space
11,000 sq. ft.
Largest room
4,695 sq. ft.
Space (private)
9,138 sq. ft.
Meeting rooms
10
Second largest room
3,455 sq. ft.
Exhibit space
2,411 sq. ft.
Space (semi-private)
2,411 sq. ft.
Space (outdoor)
1,509 sq. ft.
Standing capacity
311
Seating capacity
180

Floor Plans

Download floor plans for this venue.
Explore Meeting Rooms
Explore Meeting Rooms
Find the perfect room with setup charts and interactive 3D floor plans.

Meeting space

Meeting room floor plans

Jewel BC Download PDF
Jewel BC
West Atrium Gallery Download PDF
West Atrium Gallery
Sonesta Work Suite Download PDF
Sonesta Work Suite
Jewel A Download PDF
Jewel A
Snowden Ashford Download PDF
Snowden Ashford
Crown Terrace Download PDF
Crown Terrace

Guest rooms

Total guest rooms
274
Single (1 bed)
168
Single (1 bed) rate
$229.00 - $459.00
Double (2 beds)
90
Double (2 beds) rate
$229.00 - $459.00
Suites
16
Tax rate
15.95%

Location

Getting Here

Located in one of DC’s most walkable intersections, reach upscale dining, thriving business & political hubs, iconic national landmarks and inspiring cultural institutions from Massachusetts Avenue and North Capitol Street. https://www.20mass.com/locale
Distance from airport 5 mi
Parking in the area
Valet parking
( $65.00/day )
Street parking

Local Attractions

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Hirshhorn Museum & Sculpture Garden

Hirshhorn Museum & Sculpture Garden

Museum
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Now in our fifth decade, the Hirshhorn is a leading voice for contemporary art and culture and provides a national platform for the art and artists of our time. Located in the heart of Washington, DC, on the National Mall, we are free to all. As one of the most visited modern art museums in the US, we seek to share the transformative power of modern and contemporary art by creating meaningful, personal experiences in which art, artists, audiences, and ideas converge. Through groundbreaking exhibitions, events, research, and acquisitions, we create the space where people encounter the most important artists of the 21st century. The Hirshhorn’s holdings encompass one of the most important collections of postwar art in the world, and we are committed to providing the artists of today a global platform to explore new ways to create, with performance, digital media, video, and technology.
Independence Ave and 7th St
Washington, DC, US 20560
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Union Market

Union Market

Shopping
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Pioneering vision is the driving force behind Union Market District, an historically relevant neighborhood of sights, sounds and tastes that continues to thrive today. Expanding beyond its origins as a food market to include shopping, dining, arts, entertainment and community events year-round, Union Market District is a discovery destination—a place for creative enterprise and authentic experiences.
1309 5th St NE
Washington, DC, US 20002
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Nationals Park

Nationals Park

Recreation
3 mi
Nationals Park is located in Southeast Washington, south of the Capitol, along the fast-developing Capitol Riverfront adjacent to the Navy Yard. The new park not only redefines modern sports facility architecture but also serves as the catalyst and cornerstone of a new mixed-use Capitol Riverfront in our nation's capital.
1500 S Capitol St SE
Washington, DC, US 20003
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International Spy Museum

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United States Botanic Garden

United States Botanic Garden

Park
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Steeped in history, rich with tradition, the United States Botanic Garden (USBG) is a living plant museum that informs visitors about the importance, and often irreplaceable value, of plants to the well-being of humans and to earth's fragile ecosystems. More than 200 years ago, George Washington had a vision for the capital city of the United States that included a botanic garden that would demonstrate and promote the importance of plants to the young nation. Established by the U.S. Congress in 1820, the U.S. Botanic Garden is the oldest continuously operating botanic garden in the United States. Since 1934, it has been administered through the Architect of the Capitol. The Garden has been recognized as a museum and is accredited by the American Alliance of Museums. This accreditation is a widely recognized seal of approval that recognizes a museum's commitment to excellence, accountability, high professional standards and continued institutional improvement.
100 Maryland Ave SW
Washington, DC, US 20001
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Walter E. Washington Convention Center

Walter E. Washington Convention Center

Convention center
1 mi
From international policy conferences and industry conventions to pop culture festivals, black-tie fundraisers, and even presidential inaugural balls, the Walter E. Washington Convention Center unites locals and visitors from around the world to experience the best of the nation’s capital. With a prime location in the heart of downtown’s convention and entertainment district, visitors will find plenty to do with access to the hottest restaurants & bars, shopping, hotels and live sports.
801 Mt. Vernon Pl NW
Washington, DC, US 20001
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National Gallery of Art

National Gallery of Art

Museum
7 mins
The National Gallery of Art, founded as a gift to the nation, serves as a center of visual art, education, and culture. Our collection of more than 150,000 paintings, sculpture, decorative arts, photographs, prints, and drawings spans the history of Western art and showcases some of the triumphs of human creativity. Across 363 days a year, the National Gallery offers a full spectrum of special exhibitions and public programs free of charge.
6th Street NW and Constitution NW
Washington, DC
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Smithsonian National Museum of Natural History

Smithsonian National Museum of Natural History

Museum
8 mins
Established in 1910 and located on the National Mall, this prestigious museum, part of the Smithsonian Institution, holds the world's most extensive collection of natural history specimens and human artifacts including the remains of dinosaurs and tools used by early man.
1000 Madison Drive NW
Washington, DC, US 20560
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Ronald Reagan Washington National Airport (DCA)

Ronald Reagan Washington National Airport (DCA)

Airport
5 mi
Ronald Reagan Washington National Airport, also known as National Airport, Washington National, Reagan National Airport, DCA, Reagan, or simply National, is a national airport in Arlington, Virginia, across the Potomac River from Washington, D.C.
2401 Ronald Reagan Washington National A
irport Access Rd
Arlington, VA, US 22202
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Union Station

Union Station

Historical landmark
8 mins
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50 Massachusetts Ave NE
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United States Capitol

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Historical landmark
1 mi
The United States Capitol, often called The Capitol or the Capitol Building, is the meeting place of the United States Congress and the seat of the legislative branch of the U.S. federal government. It is located on Capitol Hill at the eastern end of the National Mall in Washington, D.C.
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Additional Information

Cancellation Policy

Individual Reservations have a 72 Hour Cancellation Policy Group Reservations Vary

Additional details

- 274 Artfully inspired hotel rooms featuring 16 suites across five floors - French Bistro concept restaurant by local affiliated restaurateur, Knead Hospitality + Design. - 12,000 SF of stylish function rooms & event spaces ready to be transformed for your gathering - Crowning the building, the multi-function conference center and ballroom span the Penthouse Level (11th floor) with private terraces, stunning views, elevated design and sophisticated technical amenities - Fitness Center and Yoga Studio - Ample lobby networking & collaboration spaces - Valet Parking Service - LEED Gold Certified & WELL Certified Core/Shell - Destination fee waived for Group guests (Wi-Fi, complimentary refillable water bottle & filtration systems throughout the hotel)

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The Royal Sonesta Washington, DC Capitol Hill Frequently Asked Questions

Explore frequently asked questions from the The Royal Sonesta Washington, DC Capitol Hill regarding Health and Safety, Sustainability, and Diversity and Inclusion

Sustainable Practices

Please provide comments or a link to any publicly communicated The Royal Sonesta Washington, DC Capitol Hill's sustainability or social impact goals/strategy.
No response.
Does The Royal Sonesta Washington, DC Capitol Hill 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.
No response.

Diversity and Inclusion

For US hotels only, is The Royal Sonesta Washington, DC Capitol Hill 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 The Royal Sonesta Washington, DC Capitol Hill's public report on their commitments and initiatives related to diversity, equity, and inclusion?
No response.

Health and Safety

Were practices at The Royal Sonesta Washington, DC Capitol Hill 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.
No response.
Does The Royal Sonesta Washington, DC Capitol Hill 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.
No response.
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