[Dionysus]

It could be a literal thing, a place that usually charges but you somehow got in for free, or a service.

A couple of years ago, I went to sectionals for my fraternity...housing is usually for free, but you usually stay in a brother's apartment or dorm room. But, this time we were assigned to stay with a brother who didn't have an apartment or dorm room. Instead, we stayed at her grandparents house, which was a (edit) mansion. We had one floor to ourselves. They cooked us dinner each night, so we didn't have to go out to eat. It was great.