Right now, you're facing towards the window, turn behind and exit the room. Now, slightly turn left and move forward. Now, slightly turn right and you can see a staircase, walk all the way down through the stairs. From here, slightly turn left and enter into the room, which has a large brown table in it. Now, turn right and exit the room. Stand at a point, where you can see a staircase on the right side and that is the end point.