I stayed at the Warwick for a four day conference . Came in late on a Thursday and was greeted warmly by the front desk staff. Contrary to the bigger hotels, the front desk here is miniscule but was hugely compensated by their warm & personable staff.
My family joined me after 2 nights and was upgraded (for a fraction of the cost of my deluxe room) to an executive front suite.
The LOCATION is great, too. We just walked our way to Union Square and surrounding areas, which is NOT usually easy with kids under ten in tow.

Charming old-style decor, fairly quiet for right in the middle of San Francisco, great location to walking to shops and restaurants, much cheaper than all of the surrounding nice hotels. I was here for a conference with a friend and my partner came in for the weekend, so it was great for both business and pleasure. I had a room with 2 beds for when my friend was here and asked if they could change me to a queen room for when my partner came in and they were very gracious about it.

My husband's sudden death sent me scurrying to S.F. Unfortunately, they were booked! I talked with the manager and she said she would check for cancelations! So I arrived Wednesday and there were no single rooms to let, but they just happen to have a suite! And an additional upgrade! So here I lie I a queen bed with it's on bathroom and I am looking into the well appointed sitting room with it's own bathroom, too! Exquisite appointed furniture! I feel I am Ms. O'Shaunssey in the Maltese Falcon! Room service for sumptuous dishes & Champagne in the refrigerator, oh dear! I did not get a fireplace or a balcony, but I have a fire escape! So all you people go some other hotel, it is too cold to sleep under the bridge! Thanks

Good location, good service, reasonably clean, well maintained. But the good things stop there. All I ask is for a quiet, comfortable room, good shower, & nice mattress - and it was just the bed that was fine.

The old hotel isn't quiet. Floorboards squeaked a lot, plumbing (mine and my neighbors') made harsh noises, shower was pretty lame, and I can hear everything going on outside - in the streets, hallways, and rooms next to me. There is no closet, and the small hanging rod in the wardrobe is narrow and goes from front to back - making it mostly inaccessible.

Lighting is bad - especially at the sink. Old fixtures.

No air conditioning. There is a ceiling fan. However, during my stay the weather turned Indian Summer - near 80-degrees. The room was pretty warm, even with the fan.

I stayed here because of the price (from a discount bidding site). I got what I paid for in SF, which isn't much. Hopefully, the next time I'm in SF it'll be at company expense so I can choose a slightly better hotel.