Hôtel-restaurant du XVIe Siècle is widely praised for its impeccable service, attentive and friendly staff, and a warm, inviting atmosphere that combines the charm of its historic setting with a cozy dining experience. Guests highlight the high quality of the traditional Swiss and French cuisine, especially noting specialties such as excellent tartare, game dishes during the hunting season, and well-prepared meats served on slate. The restaurant offers a pleasant ambiance suitable for couples, families, and groups of friends, with a beautiful terrace and a tasteful décor that respects the authenticity of the building. While the service is often described as five-star with personalized attention, some reviewers mention that the restaurant can be a bit noisy, and certain dishes like the café gourmand may be less remarkable. Overall, it is regarded as a reliable and delightful dining destination in Nyon, recommended for its quality, conviviality, and value.