Hah, hah, that's nothing. I looked at a house once that had a nice big second story room. In that room was a nice big walkin closet. In that closet was a lottle door, leading into a smaller closet-like space. In that small,space was yet another door, this one leading into an attic space, unlit, showing the brick exterior and wood framing of the house. In this space, TWO little rooms removed from the rest of the house and a hallway, was a little chair, like what a kid would use, facing the back wall.
Maybe it was left there for storage, maybe it was the hellish "time-out" room of a little kid, maybe it was the prison of a kidnapped child. I don't know and we tore like hell getting out of there!