The best part about this studio is the location. It's just a short walk from Castro Street, the main drag in Mountain View with loads of shops, cafes and restaurants. It's also walkable from the Caltrain Station so in theory you might not need to rent a car. Especially because the hosts belong to a car sharing scheme. In the heartland of the new economy it's good to see it working!
The studio itself is a converted garage and when I was there (December) it was a bit chilly. There's heating in the room but not in the bathroom so it's cold taking a shower in the morning and the towels don't dry. My advice is to bring your PJs. Obviously for the rest of the year it'll be fine.
It's clean and comfortable. Great for one or two people. Small kitchenette. There's a separate entrance so you're free to come & go as you please. Hosts are friendly and welcoming.
All in all it's a great place to stay