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 seventeenth-century private mansion, served by an elevator. Spanning three hundred eighty square meters in total (three hundred fifty-nine square meters Loi Carrez), the property is set across the second, third and fourth 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 (two hundred five square meters) opens onto a gracious entrance gallery leading to an expansive reception room with four-meter high ceilings, an elegant dining room, a study or television lounge, a separate kitchen and a laundry room.The upper floor (one hundred twenty-nine square meters) is dedicated to a vast principal suite with soaring six-meter ceilings, a mezzanine television lounge, a refined bathroom and a bespoke dressing room.The top floor (forty-six square meters) 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.