Finish climbing the stairs and walk straight through the doorway in front of you. You'll be a bedroom at that point. Turn right and walk across the room next to the bed to the doorway on your right. Turn right and walk though the closet into the bathroom. Stop in front of the toilet in the bathroom.
Turn left and continue up the stairs. Go straight through to the bedroom, turn to the right and walk past the bed. Turn right again and go through the closet. Continue straight, into the bathroom. Wait right there, in front of the mirror.
Go up the stairs and straight forward through the doorway. Turn right, move forward, and enter the doorway on the right. Move forward into the bathroom and stop in front of the toilet.