We spent two nights at Beth and Bill's place and thoroughly enjoyed our stay. They were both very welcoming and flexible, allowing us to drop off our suitcases in the morning, and leave them till the afternoon of our departure. The room is spacious and with many comforts (flat screen tv, refrigerator, coffee machine, sink, etc...) and the bed is super comfy!
The location is great, in a lovely tree lined street five minutes walk to the Bart station which takes you straight to SFO. All in all, an excellent place to stay (and to end our northern California trip)!