When you want an amazing view with fun seating and a more than correct drink, go to the rooftop of Hôtel Raphaël in summertime open every day. You can also have a light meal or snack under the umbrella.
It's a hidden jewel, as mostly only parisians know about it.
17, av. Kléber , 75016 Paris, tel 01 53 64 32 30 (Métro Kléber)
Menus between 25 and 50 euros/a la carte about 80 euros