The guest house is small - but works just fine for a family of 4. I wouldn't try to fit anymore than that. Steve and Ellen have an absolutely stunning property. The location is great - just 15 minutes down the hill to Palo Alto / Stanford. Deer outside every morning/evening. Tennis court was in great condition.
The only problem we had was with the cleaning crew showing up at 9am on the morning of our checkout. (checkout is at 11am) I would imagine that Steve and Ellen will take steps to prevent that from ever happening again.
Overall, we really enjoyed our stay and we would stay again in the future.