IMHO the DM as usual uses interesting/perjorative language. It is just possible this “dosshouse”, as the DM describes it, is a basic but clean B&B, one of several in the area that caters for the needs of crew who don’t live near the airport. There might just perhaps be several rooms, and just one occupant to a room..so perhaps it’s not a “dosshouse” in the sense of a dormitory set up with several people sleeping in bunks in a room and being in each other’s pockets socially.
I guess it is also just possible that this individual kept himself to himself and chose to drink alone in his room. In that case it is perhaps a bit unfair to speculate that his colleagues were going to know what he was up to and just perhaps a bit unfair to assume that they were knowingly engaging in a cover up.........