Set in the heart of the old town of Nyon, this elegant townhouse, rare on the market, benefits from views of the castle and the lake. The property was tastefully and extensively renovated in 2023 to a very high standard. Spread over 4 levels, this unique townhouse offers 500sqm of living space. All the rooms feature high ceilings, generous space and character, and are distributed around a central staircase illuminated by a skylight. A lovely terrace and garden offer a pleasant and quiet area nestled in the old town. The entrance hall opens onto a beautiful central staircase that leads to the reception areas. The elegant living room, with its fireplace, has a panoramic view over the castle and the lake, creating a warm and welcoming atmosphere. A spacious kitchen, with fireplace and dining area has direct access to the terrace and garden. A guest lavatory completes this level. The second floor accommodates two magnificent master bedrooms, each with dressing room and ensuite shower room. One opens onto a large balcony, while the other offers a view of the castle and the lake. On the third floor the children's area comprises two bedrooms with ensuite bathrooms. A final bedroom with a mezzanine kitchen/dining room area, complemented by an ensuite bathroom, creates a versatile and functional space. A soundproof room (ideal for a music room or home cinema), a bathroom, a beautiful wine cellar and a laundry room are located on the ground floor, offering uncompromising functionality. An independent commercial arcade, which is currently rented, provides a stable annual revenue. A closed garage completes this unique property where every detail has been meticulously designed to offer a refined living environment.