Lakefront penthouse, modern streamline style, luxurious interior, spacious open-plan living room, floor-to-ceiling windows, panoramic lake view, sleek minimalist furniture, low-profile sectional sofa, glass coffee table, ambient lighting, high-gloss wooden floors, neutral color palette, minimalist decor, large balcony, outdoor seating area, scenic lake views, sailboats, yachts, sunset, warm golden lighting, 3/4 composition, shallow depth of field.