Go down the rest of the stairs and go through the doorway at the bottom. Walk straight through the room with the guitar painting and enter the room with some chairs. Stop after entering this room.
Go down the stairs. Walk into the doorway, past the bathroom and stop in the next doorway.
Walk down the stairs. Go straight until you get to a door. Go past the door. Go past the red painting of the guy with the two neck guitar then go straight into the door ahead Wait at the entrance.