This is my favorite hotel in San Francisco. Although I usually like luxury hotels, and this is not a luxury hotel - it is on the barebones side - the location is perfect and walkable for all of the places that I go, the facilities were clean and comfortable, and they don't have extras that I don't use like gross breakfast. They do have coffee, nice staff, nice bedding, nice showers, a desk, plenty of room, etc. The area doesn't feel safe at night, but I think that could be said for a lot of the city. Also because I booked through Expedia, they gave me a goodie bag including a $10 Starbucks gift card and drink tickets to the bar downstairs for happy hour. I'm going to go out of my way to stay here next time - no complaints. (And I am actually very picky.)
I think it's probably best for business travelers and not families. Also, there is no gym.