Located in Saint-Cergues, less than 5 minutes from the town center, schools, and the Moniaz border crossing, and just 3 kilometers from the Machilly train station, this 12th-century castle stands as an exceptional heritage ensemble. Perfectly suited for either a family project or a boutique hospitality business such as a gite or bed and breakfast, it captivates with its period charm and contemporary enhancements.Set on a 1,077 sqm plot featuring a heated swimming pool, the property comprises a 160 sqm main residence along with two independent apartments renovated in 2023 and 2024. The estate is further enriched by vast outbuildings that offer extraordinary potential for further development.Upon entering the main house, the charm of centuries past immediately captivates the eye. French-style ceilings, walls revealing period stonework, solid wood floors on the upper levels, and, of course, the medieval fireplace, a majestic testament to bygone eras.The kitchen, dining room, and living room blend harmoniously in this nearly 75sqm open-plan living space, which is both welcoming and inviting. A bathroom with a freestanding bathtub and toilet completes this level.On the first floor, in the castle tower, is a spacious bedroom extending into a private relaxation area equipped with a sauna. A shower room completes this level. The second floor offers two bedrooms and an office (currently used as a children's playroom around the exposed ridge of the tower).The exterior is also spacious and fully landscaped: two large paved terraces allow you to take full advantage of the ideal amount of sunshine. The first is directly accessible from the kitchen and offers views of the lake and the Jura mountain range; the second is right next to the swimming pool, perfect for enjoying the convivial atmosphere during the warmer months.The heated, meticulously maintained swimming pool is equipped with a cover for optimal heating and added safety, as well as a solar shower.The adjoining barn, with over 73sqm of floor space and a ridge height of approximately 15m, offers a wide range of possibilities: a bed and breakfast or guesthouse, an investment project, private apartments for family and friends, a separate office for a professional practice, and more.A large double garage with space for two cars parked side-by-side, a wine cellar, a workshop, a pantry, a utility room with laundry facilities, a garden shed formerly used as a chicken coop, and a wood-fired oven complete the list of numerous advantages offered by this exceptional property.Extensive renovations have been carried out to significantly improve living comfort and reduce energy costs. These include roof replacements and insulation for the main house and barn, the installation of a heat pump supplying the main house and the two apartments, a second heat pump for the swimming pool, the replacement of the skylights (Velux type), and the lime plastering of the chateau's facade, to name just the most expensive projects.Finally, fiber optic internet has been installed in the house and apartments for optimal connectivity.Just five minutes from the Renfile border crossing and less than thirty minutes from Geneva's Mont Blanc Bridge, its prime location will appeal to those seeking exceptional properties, space, charm, and the comfort of modern amenities.Additional photos and a complete file are available upon request.ENERGY CLASS: C / CLIMATE CLASS: A Estimated average amount of annual energy expenditure for standard use, established from energy prices for the years 2021, 2022 and 2023: between 1460 Euros and 2020 Euros.Information on the risks to which this property is exposed is available on the Georisques website: www.georisques.gouv.fr.REF. 2090EAAdditional information* 10 rooms* 6 bedrooms* 1 bathroom* 3 shower rooms* 2 floors in th