The first thing, its really weird because the guests don't care about the room price. About to get the guests stay longer, that's how it works: the guests take random events (sleep, go to the shower/toilet, eat, drink). They do that during 120 real seconds. Once they finish, they pay the full room price. But, if during that time they want to go to the toilet, to the shower or to eat/drink and they can't, they would stay until they find what they need or the mad counter gets to the 25 seconds. If the second thing happens, the guest will leave the hotel without paying.
So, one thing I wanted to do is to make public showers/toilets and vending machines to replace the private ones. That is something is planned for the future, but will be done.