Dave and Lynn's place was absolutely wonderful. It is located in one of the most beautiful neighborhoods I have ever seen. The view of the streets was particularly good for my morning run.
The location is good for touring SF too. Plenty of public transportation (muni buses, subways) near the house taking less than 40 minutes to get to downtown SF (from door-to-door just by public transportation). The twin peaks are VERY close to the house you can even walk to the peaks as an ordinary hiking course.
Their hosting was super. Everytime I asked a question their reply was precise and quick (and very helpful).
I would definitely stay at this house the next time I visit SF.