This was a super special place to stay with amazingly friendly hosts.
If you like fancy hotels then find some place else. BUT if you're looking for a uniquely special accommodations, this may be the place for you. Kathryn and her family are great hosts and made us feel right at home.
The "Treehouse" is actually an old shooting cabin set among some trees in a clearing in a wooded area. (unfortunately the land is being clear cut to become grazing land for cattle, so this aspect may change) Inside there is an air mattress, some shelves, a heater, and a toilet which drains, but there is no running water. There is electricity. We had access to a full bathroom with shower in an outbuilding closer to the house (about a 5 minute walk). We were given access to the kitchen in the house whenever we needed and spent many evenings hanging out by the fire with Kathryn and here family. We went to stay there in the winter and despite the bitter cold outside, we were fairly warm in this cabin, though I suspect it would be even nicer in the summer as it has a small porch all the way around. We were able to make day trips to 2 national parks and most of New Brunswick is not too far.