For a modern apartment, a sleek and minimalist 2 seater sofa works best. Look for clean lines, neutral colors like grey, beige, or navy, and subtle detailing to complement the contemporary design of your space. Leather or fabric upholstery in a low-profile, streamlined design enhances the modern feel. A 2 seater sofa with metal or wooden legs adds a touch of sophistication and style. Pair it with modern accessories such as geometric throw pillows or sleek side tables to create a cohesive and stylish look that suits the modern aesthetic of your apartment.