Exceptional Triplex with Unrivaled Views of Notre-Dame.Overlooking the Seine, just steps from the charming rue de Bièvre, this prestigious triplex occupies the upper floors of a fully restored 17th-century private mansion, served by an elevator. Spanning 380 sqm in total (359 sqm Loi Carrez), the property is set across the 2nd, 3rd and 4th floors.The apartment impresses with its spectacular volumes, architectural character and truly unique views of the Seine and Notre-Dame, framed by seven grand windows.The first level (205 sqm) opens onto a gracious entrance gallery leading to an expansive reception room with 4-metre high ceilings, an elegant dining room, a study or TV lounge, a separate kitchen and a laundry room.The upper floor (129 sqm) is dedicated to a vast principal suite with soaring 6-metre ceilings, a mezzanine TV lounge, a refined bathroom and a bespoke dressing room.The top floor (46 sqm) features a second, dual-aspect bedroom with its own shower room.Period fireplaces, exposed beams and stonework, integrated air conditioning and impeccable condition throughout lend this exceptional residence a rare and refined atmosphere seamlessly blending historical charm with contemporary comfort.A unique opportunity to own a discreet and historic address with commanding views of one of Paris s most iconic landmarks.