La Petit France
As the name suggests, this a French restaurant. It specializes in delicacies from and of course, you are free to speak in French to any of the waiters or other staff. The food is excellent and is a perfect way to splurge on yourself if you enjoy the French culinary skills.
Address: Knobelsdorffstrasse 27, Charlottenburg.
Telephone: 325 8242.