This is the one that's the main up-down for construction on the seventh floor, so its floor is covered with scrap carpet, and its walls are padded to protect them. It's all a bit like being in an insane asylum in a comic book.
I've got a very mild case of choreomania, so when the door opened, I absentmindedly took a light half-step back before walking forward--and something SQUISHED under my foot and there was a SQUEEK like either a guinea pig or a balloon deflating! Eeek! I jumped forward and out the door, but when I turned around, didn't SEE anything