Turn around and head toward the front doors, take a right to the see stairs on your right, head up the stairs and enter the first room, stop once you are through the washroom doorway.
With the staircase towards your right, walk forward until you leave the carpeting and are on the dark wooden flooring. Turn right and head to the base of the stairs leading upwards and climb them all the way to the top. At the top veer left about thirty degrees and enter the laundry room.
Walk left and up to the top of the staircase. Go straight into the door at the top of the stairs and stop by the sink.