Try the King George (block off Union Square) at about $100/nite. Small, boutique great location on Mason Street.
1-800-288-6005 -OR-
The Huntington, just below Knob Hill but not as expensive as the Fairmont at 415-474-5400. Wonderful place, old style.

Have fun.

[This message has been edited by geo1004 (edited 05-04-99).]