This was one of our more outstanding stays in an AirBnB. Everything was just as advertised -- a good location, walkable to good bars, restaurants and, of course, close to the beach.
William was very proactive about check-in. The apartment itself is very well appointed -- has everything you need in the kitchen, for instance (even though we didn't do any substantial cooking.) And EVERYTHING in the cottage is very well labeled!
Ocean Beach is close enough to the airport that it gets moderate airplane noise. It's not constant (it seemed to come in bursts of activity) and, in my opinion, not too loud. But you should know it's there (and wouldn't be particular to this OB property.) And, William did leave out ear plugs for us in case we needed them. We didn't, but just another nice touch from a good host.