I am coming into San Francisco on business and will be dining on a Monday evening with clients. The group is young and very wine/food savy. We are going to have a full day of meetings and are looking for someplace special- with sophisticated ambience (not stuffy), interesting cuisine, great service, American or continental cuisine. We are staying at the Hotel Vitale. Price is not a major issue. I tried Quince but they are booked and have heard mixed reviews about The Boulevard. Michael Mina seems too formal. I would love to try Bar Tartine but they are closed on Mondays. Any other suggestions would be appreciated. Thanks!