This restaurant gets stars mainly for convenience. It's located right at that junction between the…read moreroads to the train that takes you to Garganta del Diablo or the upper/lower trails. It's all-you-can-eat buffet only (does not include drinks) which was pricey for Argentinian standards, but it's the best option especially when you are really hungry and tired after all the walking you have to do while in the park.
They have a salad bar which also has items like rice, beans, etc. I agree the best part was the grill where you can ask the parillero for anything from ribs, matambre, vacio, sausage, chinchulin, morcilla, etc and get as much as you can handle in one meal. The meats were ok but the morcilla was actually good. The dessert section was non existent mainly offering fruits.
There are bathrooms outside the restaurant which you can use to change into dry clothes, they're not the most spacious or comfortable for changing clothes but it's doable. The restaurant is cool inside and although there's an outside terrace there's no view to warrant sitting out there. They accept credit cards.