665 MARKET is located in the historic Palace Hotel, one of the city’s oldest and most iconic hotels. Steps from San Francisco’s Union Square shopping district, this stunning hotel is known for its grand architecture, opulent interiors, and luxurious amenities, including the famous Garden Court and Pied Piper Bar. San Francisco’s Union Square retail district is one of the most coveted retail destinations in the United States. Known for its vibrant entertainment, shopping & dining culture, Union Square is brimming with the city’s finest specialty stores, art galleries, designer boutiques, and many well-known, national retailers.