I have stayed at Stephen's place for about a month.
Stephen is amazing host. You want to have steaks with beer - no problem, Stephen knows how to grill it right. You want to have privacy - no problem. If you need anything he will help you.
Stephen's place was great - quite, clean, close to Sunnyvale Caltrain Station, bars, restaurants, grocery stores, everything you need in walking distance.
Listing doesn't have fancy photos, but it is much much better than on the photos, you have your own quite big room, balcony and private bathroom. On the first floor there is a TV plus big kitchen with everything you need if you want to cook. Plug and Play Tech Centre is also close, it's just 25 min walking, or 3 dollars uber ride. Other big tech companies such as apple, linkedin are 10-15 min ride.
Next time I am in Sunnyvale I would definitely like stay here again.