I actually don’t understand why the areas labeled "Estrich" are walled in separately. If they are located under the roof, meaning they do not have their own standing height, they are not counted as part of the floor. So even if the walls aren’t there, we are still in the non-full floor area. Including this space, the rooms become nicer. And what are the expensive roof windows for? They are located exactly where there are already windows in the gables.