This is a great centrally located hotel with pretty good competitve prices for the area. I had a room on the 8th floor on the backside of the building. The only downside was that my windows faced the brick wall of the building next door so it was a little dark. Saying that - if you are in SF you shouldn't be spending that much time in your room during the day.
The hotel was quiet at night and except for the lovely early morning garbage trucks where you get anywhere in downtown SF I wasn't awoken by a sound.
They must have been in the middle of changing out all of the linens in the hotel because I came back to my room one day and there were fresh new much nicer linens that what my trip started with.
Perks - free wifi, free receiption from 4-6pm each day up in the restaurant area on the 12th floor which has some great views and free breakfast each day which is average in hotel terms.
I would stay here again if I came back to the city.