To access this area. Luigi must use his Suction Shot to clear the wooden boards on the window in the southeastern part of the hallway. Once doing so, a little cutscene will ensue where Luigi stumbles around as the camera looks down showing the player how high up Luigi is. From here Luigi can either go left or right. If he chooses right, Luigi will go around the corner. Then Luigi must use the Dark-Light Device to reveal the rest of the path. Once doing so he will be able to access a treasure chest which has a bunch of Bills in it. If Luigi goes left he will be able to look through a window into the Laundry Room. As Luigi keeps going, a bunch of bats will fly out of a light which scares him.
At the very end of the exterior of the building is a little area, where Luigi can go inside. Right as Luigi goes inside, unsettling music starts to play. As Luigi keeps going inside, the music gets faster and louder. Once Luigi goes up the ladder, the camera will pan back revealing the entire area which now has spiders everywhere, including the area where Luigi just was. Once the player defeats all the spiders, the unsettling music will stop and the regular music will continue.
On the top-left side of the area is a bag of bills. On the top-right side of the area is a treasure chest which Luigi can get to by breaking away the wooden boards with his Suction Shot. On the bottom-left side one can see the area where the blue gem is, but it cannot be collected from here.
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