We had a fantastic 10 day stay in San Francisco at Marc's apartment situated in the Mission/Noe Valley region. This is easily the best location to stay in SF and offers great access to transport and dining.
The apartment is spacious and clean with a great outlook and Marc is an engaging and interesting host.
We have used airbnb for a few years now and have been fortunate to have had great experiences doing so; staying at Marc's apartment did not disapoint.
We would highly recommend Marc as a host in SF.