Now, you are in the middle of the staircase. Turn around and move in the upward direction by taking the stairs. Once you reached up, turn slight left and move forward towards the open white door. Now, turn right from the white door entrance and move forward towards the carpet on the floor. You will see an open white door on your left side. Pass through it and enter into the room which is empty and that will be your end point in the empty room where you are facing windows in front of you.