Very straightforward, if slightly old fashioned, restaurant. I've eaten here a couple of times when I've been visiting CERN for work - it is just across the border. Better value than restaurants across the border in Switzerland, and very friendly when I visited.
1 Place Fontaine, Saint-Genis-Pouilly, France
+33 4 50 42 20 50
Google map: bit.ly/XNR6oF