Located opposite the sea and not far from La Rochelle, the four star Hotel Mercure Chatelaillon Plage les 3 Îles welcomes you to a vast, three hectare green space where you can relax or work in an atmosphere of well-being. Want to keep fit? You'll appreciate the nearness of the seawater therapy centre in La Rochelle South. Want to treat your eyes as well as your palate? Enjoy fine dining in our restaurant, enjoying a panoramic view of the ocean from the terrace.