We had a memorable stay at Kristie's treehouse. It was our first trial to stay in a treehouse and everything was built and equipped so conveniently that we felt like being in a regular house on ground. If you want to try to stay in tree house, this would be the best one.
Also Kristie is a great host - she's very attentive and always one phone call away. We highly recommend to check her guide book (given in pdf format and hardcopy is in the house as well)- her recommendations are from local knowledge!