I think the best hiding places aren't the ones that are built by purpose, but the ones that are formed accidentally. Like this one. The grandmom's winterjacket was hanging conveniently above the kid's backpack. Under the jacket there was a lovely warm space for a cat to go and find some privacy. I stayed there a good while and enjoyed my solitude.
The humans thought it was hilarious, I don't know why. They should try it sometimes, to go hiding in a closet or behind the curtains. They just might happen to like it!