You are standing in the middle of the staircase, facing towards the wall, slightly turn right, get down the staircase and stand on the second step of the staircase, slightly turn right, in-front of you there is a open entrance, walk through the entrance and enter the room, turn back, to the left there is another open entrance, stand in-front of the entrance, in-front of you there is a closed door, walk to the close door and stand in-front of it, that is your end point.