Princess Peach's room

Princess Peach's room is a room of Princess Peach's Castle that reoccurs throughout the series. It is where Princess Peach commonly sleeps at.

Paper Mario
In Paper Mario, Princess Peach is kept inside her room during the majority of the game. Bowser tells his troops to keep Princess Peach inside until his plan comes into motion. Whenever Princess Peach tries to leave through the front door, she will be immediately tossed back inside. Eventually, a Star Kid named Twink appears through her balcony door and aids her throughout the game. Princess Peach can escape her room by pressing a switch behind a picture to turn the fireplace off leading to a secret passageway. This passageway leads to a room that Bowser uses (as he kept his diary in there).