Located in a 19th-century building with an elevator on Rue du Cloître Notre-Dame, this exceptional 100 m² duplex blends modern design with historic charm, making it a perfect luxury residence, pied-à-terre, or premium investment. The bright third-floor entrance leads to spacious reception areas, an elegant living and dining room that opens onto a private terrace, and a fully equipped open kitchen. A private staircase ascends to the quiet fourth floor, which features two bedrooms, a bathroom, and a second terrace with peaceful views over the Parisian rooftops. Complete with reversible air conditioning, a private cellar, and an unmatched location within walking distance of Notre-Dame, Île Saint-Louis, and the Sainte-Chapelle, this rare property offers a unique living experience in the heart of historic Paris.