Facing the Île Saint-Louis and a stone's throw from the renowned Massillon school, on the first floor of a former private mansion, this unique property spans approximately 400m2. The appartement is accessed through a private entrance hall of the mansion. A second entrance, through the adjoining building, with an elevator, is also available. It is distributed as follows: overlooking the Seine is a double living room, a library, a dining room, an eat-in kitchen, and a bedroom with a walk-in closet. The courtyard side consists of a master suite with a monumental fireplace, a walk-in closet, and a bathroom, as well as a separate children's wing with three bedrooms, two bathrooms, a fitted kitchen, a laundry room, and a storage room. The property is in very good condition. Exceptional views of the Seine, Île Saint-Louis, and the Hôtel Lambert. Possibility of acquiring a service room on the second floor with water point and WC, an independent studio of 30 m2 on the ground floor, a double cellar in the basement as well as a box in the courtyard