I mentioned this a few updates back but I still feel it true for some things that I feel should be added/adjusted, donno, just something that I feel would make the Grind side a little more rewarding than it is atm.
1: Overnighters :: Liturally Overnighters that give little cash, stay in rooms that are not really shown or perhaps the ones across the corridor or something, ideally, they would fill in during the days when you need that little influx of cash. They don't demand service like the VIPs or take up space in facilities, they are just there for trickle. But taking them on causes general stats to deteriate faster. They are messier, damage things, steal your towels and so forth.
2: VIP Starts :: Moreso. VIPs start as an Overnighter, though you can unlock them as VIPs when they leave and you kept things running well for example. Ideally, this would be their introduction to story side of their visits, so donno. But generally the idea is that you don't even know you have a VIP straight away but they do demand facility usage and such to give you an idea to focus on the new VIP appearance. Make an Impression in their daystay.
3: Satisfaction Builds Up :: Satisfaction is a built stat over their stay time, and not a hit or miss. Better service might fill more allowing for some lack of service or low quality instead. For example, quality service in one room gives 25% and another gives 20% and Lowered by 10% when they are not serviced in another and its like 5% when with low quality. when they leave, their Satisfaction of 40% could adjust their payment and such, but they do have a limit before they storm off such as if it stays below X% over a single day and it increases as they rank up in VIP levels.
4: Quality effects more :: Keeping your Hotel topped up in the Quality of things like Housekeeping and Maintainace does more than effect if a room is open or not, perhaps effecting how much % is built for the above mentioned effect.