I made these floorplans by closely watching the episodes.
Some furniture and items changed around in various episodes, and I may have
gotten some proportions a bit wrong, but these are good representations.
We didn't see much of the rest of his house, just the entrance and living room, and we know there is a pool in the back. So I didn't bother doing a floorplan of the rest of the house, and concentrated on Alex's room.