"I think just about everybody is staying at those apartments. I hope we don't run out of room." They might have to double up, and each apartment is small for one person, let alone more. Maybe this place will provide more living arrangements the way it did the apartments, or maybe they'll have to start building their own.

"I live there too, I'm a floor above you." Well, 'live' to a certain extent, considering they don't need sleep yet. Really it's just a private place to store the things that he can't or doesn't want to carry.