Stephanie offers a beautiful, spacious, quiet guest house. The bed was very comfortable, the kitchen was well equipped, and it was located in a beautiful well-manicured neighborhood. It's just a short 10 minute drive to Stanford/Palo Alto; very convenient for everything in Silicon Valley.
One note for future travelers is that the Atherton only runs on the weekend, so I wound up walking into Menlo Park (about a 30 minute walk) more often than I was expecting. So if public transportation as a primary means of travel, this might not be best location. But I think I'm the only person who would travel to California without planning on having a car available. So it shouldn't be an issue for most people.
Overall really wonderful place, highly recommended!