We recently stayed in a one bedroom studio type room. We found it to be quite spacious and nice. Bathroom is a little dated but very clean. Like many other reviews have mentioned, our only issue was the noise.
We stayed on level 6 and we were on the corner of Post and Mason. Saturday night we had the club across the street pumping loud drum music from 11 until 230am. Not sure if Friday night would be the same as we checked in on the Saturday. Every other night was no issue though. Street noise (cars, trucks, ambulances, fire trucks, etc) is fairly constant every night as you are very central in the city. This didn't worry us too much but of you are a light sleeper then you would really struggle. A higher level would be much better and a room away from the corner of Post and Mason.
As for value for money in San Fran, I still think this place is great. It's location is second to none and we would definitely stay there again! Dana replied to our few emails very promptly and check in and out was very smooth with no issues whatsoever. Can't wait to go back to San Fran again one day!!