Well the SF Marriott is a great property but I have stayed at the Parc 55 and it is not bad, either.

The location is slightly better for tourist activites - right on Union Square and nearer a cable car line. I felt that the condition of the property was a notch below the SF Marriott but the prices are usually lower both for points redemption as well as paid rooms.

No one seems to like the Fisherman's Wharf Marriott. I do not like the Renaissance Stanford Court - too "European" (meaning: tired, cramped and pompous) for my tastes and no concierge lounge, either.