"Try to build different room types. So they can ask for room upgrades or you can make more money.

This tip might work. 50%" - hints to the game

"If you see that a customer has a complaint or need try and get to it as soon as possible. This will make them happier, and cause your customer satisfaction to go up." - Madeleine

"If you find a room takes up to much space, eg. Health facility, don't build it and the customers wont complain." - Brendan