two offices of 34 and 17 m² with a kitchenette and toilet, a laundry room with exterior access, a music room, and a home theater—both soundproofed. A rarity at this level of finish. Upstairs, there are three bedrooms, including a master suite with a bathroom, a shower room, and a separate toilet. The technical features are top-notch: triple-pane windows, full home automation (shutters, heating, RJ45 cabling, illuminated awnings), and integrated security. South-facing terrace, relaxation area on the north side, and space for a pool. Well-connected area: André Derain middle school in Chambourcy, Saint-Germain-en-Laye International High School, A13 highway 10 minutes away, A14 highway 5 minutes away, RER A line 15 minutes away, shops in the immediate vicinity. A rare find in the area, available for viewing.