Ron is the most gracious host I've ever encountered with AirBnB -- and I use the service frequently. He is kind, friendly and wonderfully interesting. He knows San Francisco intimately and is great at recommending well-priced, non-touristy restaurants and things to do.
I can't say enough good things about Ron and his lovely home. It is perfect! My partner and I, as well as my sister, stayed with him for three days and had a marvelous time.
Book his place - you won't regret it.