The place was accurately described. It's hard to tell how small the treehouse is from the pictures, so just be aware that two people can just barely squeeze in. I'd say the width of the treehouse is a bit smaller than a double bed.
Other than that, by the time you book, you should probably know what you're getting yourself into. It's definitely more like camping than it is a traditional Airbnb. If that's what you're looking for, I think you'll enjoy it!