My grandmother had a closet that connected, by a hidden walkway, to the closet in another bedroom. I used to go from one bedroom to another by that secret passageway. Not for any reason, just because, lol!
PCH would be perfect for that.
Your parents sound like just what children really need.
I love parents like yours. They touch many young lives, not just those of their own children.
Love All Life; Thank You For Posting! :)