imagine ultra realistic architectural interior rendering of a two story accessory dwelling unit adu interior stair hall view minimalist tropical modern architecture sculptural split flight stair with floating concrete treads and slender black metal railing compact spiral like stair geometry wrapping around a tall vertical window double height interior space with clerestory light from above thick plaster or concrete walls smooth but imperfect material textures restrained neutral color palette strong contrast between light and shadow soft indirect daylight entering through vertical glazing and overhead opening calm and contemplative atmosphere no decorative lighting no furniture emphasis clean architectural detailing professional architectural visualization eye level interior perspective raw photo realism ar 4 3 style raw
