This was my first stay at a Airbnb location, but certainly not the last. The facilities was as described with a bedroom and bathroom with a separate entrance and moreover a fantastic annex with living room incl. kitchen facilities. Slightly difficult to get down some stairs, but only a problem if you have any disabilities.
5-10 minutes down the hill (preferably in a car, as you also need to get back up again), you are at the local metro station from which you are in central SF within 15 minutes. Therefore very conveniently located.