NEW GUEST ROOMS. A new luxury offering in San Francisco, the JW Marriott Union Square has completed a multi-million dollar guest room renovation. Reap the benefits of a superb downtown location, luxury accommodations and brilliant amenities. Situated in San Francisco's thriving Union Square neighborhood, we offer travelers easy access to all areas of the city. Arrive at our hotel and immediately feel at ease in our spacious guest rooms and suites, which feature thoughtful details and modern amenities. While nearby activities are innumerable, make time to enjoy facilities like our modern fitness center and our signature bar and restaurant, Level III. Once you're ready to venture out, discover the array of nearby attractions, including AT&T Park, Chinatown, Fisherman's Wharf and Ghirardelli Square. If you're visiting San Francisco on business, you'll love our hotel's proximity to the Financial District as well as our over 12,400 square feet of modern meeting room space.