My colleague, who stayed with the host, had this to say:

After a pleasant taxi ride in to downtown San Francisco, I was delivered to a beautiful park neighborhood and found everything exactly as described to me by the host prior to my arrival. Keys were where they said they were, and the space I rented was clean and bright and extremely well appointed. The space was perfect for my needs that week, extremely close to everywhere I needed to be and a beautiful place to spend the week. There's a great coffee shop and a Whole Foods around the corner, easily walkable for your daily caffeine and food needs.

The host was fantastic. Polite, courteous, extremely welcoming and more then willing to share his advice and ideas about what to do in and around the city.

I will absolutely look up his place again the next time I visit San Francisco.