we recently stayed at this hotel and were so pleasantly surprised! it's smaller, very cozy and right next to union square. there's a lot of attention to detail, from the furniture and light fixtures to the aveda bath products. the concierge was extremely helpful in getting us info and dinner reservations. we didn't eat at their restaurant, but it was packed every night and so was the adjoining bar. in fact, it was busier than the W bar or frisson. no a/c, but you're in san fran., it's cold here ANYWAYS. we'll definitely be back.
Pros: good decor, pleasant service, fresh lemonade
Cons: no a/c, some outside noise