Cold and wet. That roof is going to leak so badly when it rains, if it doesn't just collapse on top of him. Not that he will ever actually sleep in this hovel. Also, dead wood is full of insects. When it's cold they lie dormant, but when you heat them up -- say, with a cooking fire -- they come out to play. I like the door, though. He used actuall boards for the door, and a saw to cut the little diamond-shaped hole.