Design or art hero: “Finally, and this is what the house is most famous for, there are the little details full of love and joy: the way the balustrade on the stair is treated, the way he places a chimney right against the window and allows himself just a tiny play of solid white mass eaten away by daylight, and the way the textures and patterns of the wall, floor, and ceiling create a calming whole without being precious or dogmatic.” Image: copyright Hassan Bagheri