Exclusive listing. Located on the prestigious Île Saint-Louis, on the 4th and top floor of a well-maintained 17th century building, this charming duplex is accessed via a beautiful original staircase. Offering 116.97 sqm of floor area (74.11 sqm Carrez law), and feeling like a house under the eaves, the apartment is arranged over two levels: The first level features a spacious living area combining a lounge, dining room, and fully equipped open kitchen, benefiting from dual exposure. This floor also includes a study that can easily serve as a bedroom, a shower room, and separate WC. The second level, accessed via an internal staircase, offers a charming bedroom under the eaves, extended by a study area and a laundry room with WC. A cellar completes the property. This rare property enjoys an iconic central Paris location while offering a calm and privileged environment. It benefits from an optimized layout, ample storage space, and beautiful natural light thanks to its dual exposure.