Carole is so cool! I got to meet her dog and cat, and they were both sweet too. The treehouse was exactly how the listing described it. I'm 5'4" and could easily stand up and lie down in it. It feels the same size as a 2-person tent.
The tree is an easy climb with plenty of limbs and nubs to hold onto as you make your way up. It rained while I was there, but inside was completely dry and the tree was still fine to climb. The temperature was cold like tent camping, but my sleeping bag and a blanket kept things cozy. Overall a very fun stay!