Art Nouveau boathouse, luxurious interior, functional spaces, elegant curved lines, ornate wooden furniture, velvet upholstery, golden lighting fixtures, stained glass windows, intricate ironwork, riverbank setting, sunset time, warm soft light, tranquil atmosphere, water reflections, lush greenery, weeping willows, vintage nautical elements, distressed wood accents, plush area rugs, majestic staircase, grand chandelier, ornate ceiling details, warm beige colors, natural materials, organic textures.