You can't see the trunk in the middle--it runs right up thru the deck, next to the bathroom. I think it's blocked by all the steps and stilts. I agree about the decor--it was pretty rustic and tacky, to say the least. It had great windows so we could watch the rain pouring down around us. All their treehouses were on stilts--easily replaced when they rotted.
When you open your bar, let us know! Sounds like my kind of place.