Didn't one of the Colgan accident pilots spend the night before the event in the crewroom?
In addition to not wanting it to be a hotel, I would think there is also probably a legal reason not to have crew over-nighting in company break rooms. That said, I was non-reving through JFK a while back, and got stuck there pretty late, so I wound up spending the night in the crewroom waiting for a 6am flight. **** happens.