This game is way better than the other hotel games. It has the experience upgrades, such a good idea. I really like the whole "unlock characters" thing, and it actually has a story unlike the other hotel games. I'm definitely playing the sequel if you ever make one. I also like how you referenced all those other games in there, too.
I think you should be able to sell some (not all) of a stacked item, and there should be a sound notification when you get an item just so it's more convenient.
it does.