AMAZING. We had a wonderful time with our 2 year old at the treehouse. Everything was just as described.
PACK LIGHT! Bring a rolling cooler, with a narrow wheelbase if possible, if you have a lot of food that needs to be refrigerated (there's a mini fridge in the treehouse). The hike at an adult's pace without gear is about 3 minutes. It is a legit hiking trail with roots, wooden bridges, uphills and down and a beautiful walk through the forest. No WIFI and phone service is poor so prepare to unplug and be surrounded by big trees.