Nevermind, found the skybox.
The island is way too symmetrical and with it being so small, you should've brickscaped it instead of cubescaped. The house really isn't a house; it doesn't have all what a house needs. There is no kitchen or bathroom. (You might ask, can't you just buy food already cooked and use public bathrooms? No, it's an island floating in the middle of no-where.)
It's not that impressive, but I love the idea, with the waterfall (Which doesn't make that much sense but who cares about that, it looks nice.) the skybox is amazing though; it really adds to the scene of being in the air.