I stayed with David and Suellen for the first couple weeks of August when I started a new job in San Francisco city. I couldn't have found a better place to stay while transitioning into a new job. Everything in the room was as described and more than accurate. David has built a beautiful backyard at his home. David and Suellen were very friendly and approachable during my stay. They even invited me to a backyard BBQ party on my last night (which was awesome!).
The neighborhood is overall safe. For transportation to the city, McArthur bart is 10 minutes walk away (which takes you to city in 20 minutes). Overall, I enjoyed my stay and would love to stay again!