Overall, everything was great. The location, the room, the kitchen/common area that allowed you to get some groceries and store them in the fridge. I even did a load of laundry, which was great.
The only downsides were that things seemed to be broken a lot. The electric blind in my room didn't work, so the staff had to roll it up and jam it in the window so I wasn't sitting in a dark box. The shower water was only scalding hot, which meant that I had to just barely splash water on the important bits so I didn't get burned. And the coffee machine in the kitchen kept breaking.
All in all, minor-ish things. The staff responded to things as fast and best they could, but it did diminish my experience.
Now -- would I stay there again? Yes. But really, it's about the price. The only place in San Fran that's decent (quality) without costing a million dollars.
If there were other options in the same price range, would I go there instead? Yeah, probably.
Still worth staying here, though. I'm sure my experience was an anomaly.