Sam's place was a nice spot for my trip to LA. I spent most of my time here working, and there were plenty of nooks to work and relax in. Super solid internet as well. The location is surprisingly walkable and near lots of very charming boutiques and coffee shops, which made it convenient to just head out and grab a snack or lunch when I needed a break. The treehouse is spectacular as well, and the views of downtown are downright picturesque.
The house itself is cute, comfortable, but very quirky. It definitely feels old and just a little creaky, which isn't represented well in the photos. In general I would say that the photos kind of give the wrong "vibe", so if you go into this thinking its going to be a chic, modern, and vibrant house you're going to be in for a surprise. I would expect a more rustic, folksy vibe. This didn't materially affected my stay (I actually love a rustic spot), but just something to be aware of if you're IN LOVE with how the photos look.
Overall, I would recommend staying here. Sam was responsive, the location is hard to beat, and there's a lot of charm to be found in the house and backyard!