When you're planning your visit to X.v.s, you could take public transportation to the stop Cap Pays Cathare, which is the nearest stop at 179 meters distance to the restaurant.
As soon as we have a menu for X.v.s from Saint-Girons, we will publish it here. In the meantime, feel free to take a look at the meal plans in the surrounding area. Or help us by making available a photo of the menu here.