You are in the washroom facing towards the glass door. Turn left and walk through the door. Now turn right and walk towards the room which has a open door. Now turn right and walk towards the staircase. Now you are standing near the staircase. Turn around and to your right you will find a window inside the open room. So walk towards it. Now again turn around and walk towards the open door. Now you are standing in front of the open door and to your right you will have a closed door in the passage. So that will be the end point.