Hotel Leyva is not actually the hotel that CC uses. I thought so also, but it is the next door down.
I don't think they charge for ladies coming in, and if you walk through the auto entrance you don't even walk by the front desk. A friend who knows a man who stays there says her brings SG's back with no problem. The ladies from CC use the hotel directly to the right walking out. I don't think that they would go to Leyva, since they are given a slip of paper that gets signed by the desk clerk after the session, and is given back to the coat check at CC.
It didn't have air, but had a fan that was adequate. The only noise was from the girls hooting it up on occasion. I think some of the bar girls stay there. All-in-all noise was not an issue. One bad thing was the dead bolt did not lock, and the door could be opened fairly easily I think (room 106). I don't take anything down that I would really care if I lost, so it wasn't a big issue. The shower had nice hot water though. It was clean, but old. I would stay there again though. The hotels on Ave. Revo are about the same cost and a slight step up, although it is another $3-$5 for the cab if you choose not to walk back at night.
