Room 502
Room 502 is a hotel room in Luigi's Mansion 3. It is found on the 5th floor of the Last Resort, the RIP Suites. It is adjacent to the 502 Bathroom and the 501 Bathroom.
This is the hotel room that Mario stayed in. When Luigi first enters this room, he calls out Mario’s name. There is a desk, a wardrobe, a bed, a table, two armchairs (one that is on its side), and a cart that is blocking Luigi from entering the 502 bathroom. Later in the game, Luigi can use his Suction Shot to get rid of the cart. There is a bunch of pizza all over the room.
There’s a coin in the drawer next to the desk, and a claw in the drawer to the right of the bed. If Luigi goes to the northwest corner of the room, a gust of wind will blow causing Luigi to get scared. He can go outside through this window. If Luigi goes outside and then goes right he will come across a treasure chest, inside the chest is a bunch of money. Along the path to the treasure chest is even more money.
During the chase between King Boo and Luigi, King Boo makes the door to Room 502 invisible. Luigi will need to use the Dark-Light Device to make the door reappear.