Located in the heart of Rambouillet, the hotel is set in a 16th-century former coaching inn offering air-conditioned rooms and a fitness center. It is just 164 feet from the château de Rambouillet. All of the rooms at Mercure Relays Du Château feature a mini-bar, a flat-screen TV with satellite channels and a private bathroom with a bath or a shower. Breakfast is served every morning in the communal lounge. The hotel's restaurant, Le Relays, offers dishes with fresh and seasonal products. Guests can also relax on the terrace with a cocktail from the bar. Free WiFi is available in the entire hotel. Mercure Relays Du Château also provides meeting facilities.