When you stay at JW Marriott San Francisco Union Square, you'll be just a 5-minute drive from Oracle Park and Pier 39. Guests can visit the 24-hour fitness center for a workout or grab a bite to eat at Level III Restaurant, which serves Californian cuisine and is open for breakfast, lunch, and dinner. Other highlights at this luxurious hotel include a bar/lounge, a snack bar/deli, and a terrace. The helpful staff and location get great marks from fellow travelers. Public transportation is just a short walk: Powell St & Post St Stop is 2 minutes and Powell St & Sutter St Stop is 3 minutes.