The Bar/Lounge at Hyatt Regency San Francisco
The bar/lounge at Hyatt Regency San Francisco is endorsed by those who travel for a living. Of the 7 professionals that we tracked, 5 acknowledged the bar/lounge, such as Frommer's, Fodor's and Oyster.
Hyatt Regency San Francisco 
Frommer's
Fodor's
Oyster
Gayot
Star Service
Frommer's "The 13-Views Lounge serves cocktails and bar food for dinner"
Fodor's "Renovations were in the works at press time, adding to recent refreshments of the suites on the top two floors and the breathtaking Regency Club (formerly the rotating lounge bar, Equinox), which has a staggering 360-degree view of the city and bay"
Oyster "This is largely a business hotel, though its location near the scenic Embarcadero and bustling commercial artery of Market Street is convenient for leisure travelers exploring the city"
Gayot "At the on-site eatery, the lobby-level Eclipse Restaurant and Lounge, guests can enjoy martinis and appetizers while they look out on Justin Herman Plaza and the waterfront"
Star Service "Rooms in the -05 to -25 series offer fine vistas of the Bay Bridge, and Hyatt's various premium grades are also available on floors 16 through 18, with access to a private lounge"
