I always assume that they parents will want to see where the child will nap. Therefore, I do a bit of a mad-dash clean of at least one bedroom, hahaha. My last 2 interviews, I offered, but they said "Nah, that's ok. We can already tell you're normal." LoL
I don't mind, especially for new parents. They just want to make sure that we don't have swords hanging over thier precious little muffin. But after that, they are restricted to our entranceway.