imagine ultra realistic architectural interior rendering of a two story accessory dwelling unit adu interior view from living space toward kitchen and stair minimalist tropical modern architecture inward facing compact dwelling smooth plaster interior partition walls in warm off white tones exposed concrete floor slab and exposed concrete ceiling slab restrained material palette narrow galley kitchen tucked beneath stair landing with integrated base cabinetry and appliances sculptural split flight stair with floating concrete treads and slender black metal railing stair fully enclosed by interior walls horizontal slot window providing controlled daylight indirect natural light filtering through stair and upper level openings strong sectional relationship between compressed living space and vertical circulation calm and quiet interior atmosphere no decorative lighting no exterior atrium clean architectural detailing professional architectural visualization eye level interior perspective raw photo realism ar 4 3 style raw