The press-shy Jean-Louis owns the Groupe Costes, which focuses on hotels, and Gilbert and his son, Thierry, run the restaurant-heavy Beaumarly group. The family recipe for success in spots like L’Avenue, Café Marly and Le Georges atop the Centre Pompidou (now closed for renovations) is nothing if not consistent. More scene than haute cuisine, most offer classic French favorites, serving them to a stylish crowd with a cooler-than-thou attitude.