I have been to this place several times and each time it never disappoints me. It is charming and intimate, away from tourist crowds and it offers real quality French food. Their 'formule entre+plat OR plat+dessert' at 18 euros is reasonally priced considering the high quality of their food, the technical ability in the preparation of their dishes and the presentation. The menu is not huge (good sign!) and the daily special has always been very good. Personnel is very helpful and knowledgeable about the food and the wine. Absolutely must visit this little restaurant when in Paris; they are in the 15th, so not too far away from the Eiffel Tower, but far enough not to have groups ruining your meal experience. They are next to a nice street (rue du Commerce) with many shops, so you have another reason for the detour. I go to the Cristal du Sel to relax and to taste great food with calm. Highly recommended.