Situated on the western bank of the Pearl River Delta, Macau is a Special Administrative Region (SAR) of China. The St. Regis Macao, Cotai Central is ideally positioned within Macau’s coveted Cotai Strip.Situated on the western bank of the Pearl River Delta, Macau is a Special Administrative Region (SAR) of China. The St. Regis Macao, Cotai Central is ideally positioned within Macau’s coveted Cotai Strip.