I like the Grand Hyatt. They have fabulous service, great location, and wonderful food believe it or not with a view you can't beat in their penthouse restaurant.

The W is neat but the rooms are very small.

And I am partial to the Westin properties even in San Francisco. The Crowne Plaza is okay, the Sir Francis Drake too dowdy at this point, the Fairmont is nice but I don't know if I'd go out of my way to stay there...