There is a room in the ho(s)tel that is not used, maybe there is something to do there…
I've tried to drag and drop the girls there, but they don't want to go. I've tried while they are horny and when they aren't. I even tried to ignore bringing them to the boss for a while. I did notice that theres some symbol at the top between the bathroom and the top middle room, but I can't find a way to interact with it. I'll try to look a bit more.