I live in a victorian villa that has been butchered by a series of unsympathetic renovations and extensions. At some point someone has converted the old pantry or larder into a downstairs toilet. It is a very narrow, tall room and a small timber window was added at a very high point on the back wall. It has an old rope and pulley system for opening it. I have never seen anything like it elsewhere. I want to get rid of it and put in a new window, then decorate the bathroom. Does anyone have suggestions for a new window or other means of ventilating the room?