You are standing in the middle of the staircase, facing towards the wall, turn right, climb the staircase completely, slightly turn left, walk straight. Walk straight, slightly turn left, in-front of you there is a open door, walk through the open door, enter the room, now you are in a washroom facing towards the mirror, turn back, exit the washroom, in-front of you there is a glass window, walk straight to the glass window and stand in-front of it, that is your end point.