From the Super Mario Wiki
WoodDoor-Hysteria is the first hotel found in Hotel Mario, owned by Morton Koopa Jr. It is a hotel built in a big tree. Enemies found here are Goombas, Koopa Troopas and Wigglers. The player must try to avoid Goombas, Koopa Troopas, Wigglers, and Morton Koopa Jr. and close the doors in the hotel in order to win.