We spent four months at Kirsten and Frank's studio, and I can only say good things! For starters, they are lovely people, really interesting to talk to, knowledgeable, caring and hospitable. They even invited us over to celebrate Thanksgivings with their family, and we were really touched and will always remember that evening.
The room is exactly as shown in the pictures. It has been thoughtfully designed and equiped so that you have everything you will need during your stay to live like at home (kitchenware, towels, coffee machine, iron, etc!). Kirsten really did a great job making the space so functional! I also loved the bed: I slept like a queen, and it's nice and quiet at night (the first evenings you may hear the train or the planes, but that's everywhere in Palo Alto). There is also a lovely garden that guests can use. I often went outside to have my coffee and read a book in the morning.
All in all, I highly recommend this place. You cannot wish for better hosts than Kirsten and Frank!