modern minimalist living room with concrete walls, cozy grey sofa, and sleek staircase under warm ambient lighting

modern minimalist living room concrete wall cozy grey sofa sleek spacious sophisticated architecture upholstery upscale trendy couch comfort ambiance understate relaxation industrial seat refined neutral luxury decor uncluttered elegant polished area nook arrangement plan apartment interior furniture texture ambient contemporary open residential urban aesthetic tone stylish staircase feature design walls warm lighting generative