Although this room had no number and was certainly not intended as sleeping quarters, during hunting season, a mattress would be placed on the floor, with part going up the wall, to accommodate a tired hunter.
The window was added when it became more than a storage area by a local handy-man. Originally plain glass, we replaced it with the current stained glass window when turning it into a bathroom for the master bedroom. It is not clear if the window is crooked or if the house being not level makes it look that way. Looks fine from the inside, but from the outside the window has an obvious tilt.