In my experience, the worse a Mexican restaurant looks, the better and more authentic the food. This one is certainly nothing to look outside or inside. People come here for the food, not the ambience. You order at the counter, which is painted an unappealing shade of dark green, and sit at tables covered with green checkered oilcloth to wait for your meal to arrive, which takes a little while because very little is cooked ahead. And when the food (which is amazingly cheap) comes, it is superb. At lunchtime, when I go because it isn’t far from where I work, the place is crowded with construction workers who probably speak little or no English and who are looking for a taste of home. Taco Lucas, with its friendly owners and great food, gives them just what they’re looking for.
And note that Golfe du Morbihan Daily Photo is now Arradon Daily Photo, so change your links accordingly.