I've been here several times, the menu is one of a kind and the service and environment of the restaurant is really great.
However, I do find most of their food way too heavy as almost everything is drenched in foie gras and grease/fat. Their specialty, the stuffed pied du cochon, was almost impossible to finish, as it was just too greasy and there was hardly any meat on it. Even if you pack the leftovers the next day and reheat it, the texture/taste of the meat changes and tastes pretty bad.
Therefore, the restaurant a bit overrated in my opinion and I would only recommend going for those who can handle extremely heavy meals.