I nap 3 kids upstairs, one in each bedroom. When I interview I always make sure one room is set up and pretty. (clean) IF and only if a parent asks to see the space I show them that space and assure them their child will sleep there.

but my kids are still young, so I'm ok with invading their space. LOL

I NEVER show my bedroom! I just tell clients I don't nap in there. It's my space.