Joe's place is a unique stay -- can't say I've spent the night in a treehouse music studio before! Although we aren't musicians, Joe lets guests jam away on instruments until 7/8pm. He's super friendly and has a restaurant not too far away from the house. We briefly met his family (and his adorable daughter) the next morning -- they gave us advice for day plans (Oakland Zoo).
The space is clean, larger than expected, and has a great outdoors deck. The deck doesn't have lights, but does have a propane grill that guests can use and a large sitting area (can fit 5+ easily). Inside is a mini kitchenette (no range, but does have an electric stovetop) and microwave if you decide to stay in for dinner/breakfast. The bathroom has a GIANT (very very wide) "family size" tub. We only needed the main bed, but the pull-out bed was ready and made when we arrived too.
Overall, we had a great night's sleep and felt great about our choice. Thanks Joe for your quick replies and for lending us your space!