Adequately adequate.
Being the lazy sod I am, I booked this hotel 10hrs before I checked in. Didn't read any reviews and based my stay on the price. 
It was slightly below my expectations for the cash I spent. The room was small but the bed was comfortable. It got a little loud outside when road workers decided to start working at stupid o'clock. Not the problem of the Hotel, I concede.
The area is good if you know where you're going. It's 5 mins walk from Union Square. The area is also bad in that if you take a wrong turn exiting, you end up in downtown crackheadville. Then again, it is San Francisco so you're never too far away from the crazies.
Would I stay there again? Possibly.