The solution is to cover the flat roof with sloping roofs. Entry foyer separated from living room and balcony by a glass partition. Click thumbnail to see bigger image. Guest room to the left. Glass louvered windows reminiscent of the 1950s to the left has light from the air well.
Most owners simply install sliding windows.
Air conditioner compressor of lower maisonette produces some sound. Upstairs, big family area with 4 big bedrooms. All wooden strips outside rooms. 3 attached bathrooms, cable TV, white cabinets, dark brown closets. Airwell enclosed by glass louvered windows brings light to all rooms.