Check behind lockers, and bookshelfs, never seen one behind any washers or dryers, but those block view too. Most I’ve found do not have people in them making noises. Just have to look over the place and go, hmm those rooms don’t add up, I took 10 steps from the other door, to get to this door but each room only goes 2 steps towards each other and walls, hmm, that leaves a 6 space gap, let me move that bookshelf.
