While we stayed at the Horse Cave KOA, we stayed our second night in a Treehouse! (It was really more like a cabin on pillars made to look like a tree trunk/branches.)
We really enjoyed our stay here. It had a nice firepit and seating underneath the cabin. Inside hosted a queen bedroom, a full kitchen (with plates, cups, utensils, and cooking pans/pots), couches, TV, fireplace, and a loft with two queen beds. The back porch had a nice table, views, and grill. The best part was the full bathroom!
It was definitely a nice space to relax in and we really enjoyed the back deck. The kitchen table was more like a folding table and chairs, so we ate on the porch most of the time. It was a good space to spread out and have our own areas.