In the heart of the prestigious Île Saint-Louis, on the fourth floor of a historic 17th-century building, lies this rare and characterful apartment offering 91 sqm of total floor area (86 sqm Carrez law), complemented by a charming 6 sqm terrace. With the feel of a private home tucked beneath the rooftops, this fully renovated property features a magnificent cathedral-ceilinged living room, extending onto the terrace, a mezzanine, ideal as a home office or occasional guest bedroom, and a fully fitted and equipped kitchen. An internal staircase leads to the sleeping quarters, comprising a principal bedroom with en-suite bathroom, a second bedroom, a shower room, and separate WC. Exceptionally peaceful, the apartment enjoys absolute tranquility, abundant natural light, and one of the most sought-after addresses in Paris. A truly unique property, elegantly combining the timeless charm of historic Paris, the comfort of a carefully executed renovation, and the rare privilege of a private terrace.