Facing the Seine, on the unique Île de la Loge, this property offers a rare lifestyle where the river, the light, and the peaceful passage of barges set the rhythm of daily life. At the heart of a park of more than 2,900 m², the house overlooks the Seine and offers 365 m² of generous, light-filled spaces. A spacious entrance leads to an immense cathedral-style living room with a fireplace and bar, opening widely onto the terrace and south-facing garden. The open kitchen and dining room extend this welcoming reception area. This level also includes a laundry room / back kitchen, guest toilets, and a suite with shower room and dressing room. Upstairs, the large master suite—with the option of a study or lounge—features a dressing room and shower room. Three additional bedrooms, each with their own bathroom or shower room, a dressing room, two toilets, and a large, very bright mezzanine office with magnificent views over the Seine just below the property, create an ideal sleeping area for a family. The lower ground floor offers a gym or games room, a cinema room, a pantry, an additional room opening onto an English courtyard, as well as an immense garage for up to six cars. The spacious garden, completely private and not overlooked, features a swimming pool that can remain covered or uncovered depending on the season. Close to the tennis courts and sports facilities of the Cercle de Bougival and just 10 minutes from the Lycée International de Saint-Germain-en-Laye, this exceptional property offers a unique riverside lifestyle at the gateway to Paris. Only a few minutes from Louveciennes train station (Line L to La Défense and Paris Saint-Lazare) and bus connections to Saint-Germain-en-Laye, Versailles, and their renowned schools.