The spectacular view embraces the entire western part of Paris: the Louis Vuitton Foundation, the Eiffel Tower, up to the towers of Notre-Dame. On the top floor of the Mama Shelter hotel in La Défense, which opened in June, the atmosphere of the rooftop restaurant is lively. In this end-of-year lunch, groups of colleagues share platters of gourmet desserts and the regulars sink into the colorful cushions of the benches, just like at home.