Shriek Mansion 3-1
From the Super Mario Wiki, the Mario encyclopedia
The level starts in an area with a Dry Bones and a ladder at the end which leads to a door. If the player goes through the door and uses the Joy vibe they can press a switch which causes some platforms in the room to disappear and leads to a Toad. Continuing up the level leads to another door with a Dry Bones, a Glad Red Koopa and a Warp Pipe that leads to a room with some Sad Paragoombas and a ladder that leads to another Toad. If the player uses the Joy vibe after coming back into the main room, they can float up to another where another Toad can be found. At the top of the main room is another door, which leads to the next section of the level.
In this section are various platforms above spikes and some Boos before another door. In the next section are some Dry Bones and a Boo with some platforms with spikes in between them. After this section is a ladder which leads to some platforms and a Warp Pipe. The next area is outside of the mansion and the player receives the Slidebrella, which they then use to progress over some ropes that lead to another Warp Pipe. In the next area is a Sad Dry Bones and a door which goes back to the start of the previous section, alongside the end of the level.