Begin in an office. When facing the desk head to the window on your left then exit our the door. To your right will be a washroom. Head in then turn around and head out into the hall. You'll see a hall table beside a brick wall. Head to the right of it and enter into the open double door. You'll be in a bedroom. On the right side will be an entrance to a wc. Head init it, go to the window at the end of the room and you're done.