We visited here last week for lunch. The salad bar was fantastic with loads of proper fresh salads etc. The Argentinian BBQ is wonderful. Two chefs cooked a variety of meats on the large grills including an amazing array of different cuts of beef, plus some grilled vegetables too. It's an all you can eat restaurant and the price is amazing for the quality of food that we received. But please don't think it is in any way a crass, greedy and wasteful place, because it isn't. You can just choose the amount of wonder food that you'd like and chefs serve you from the BBQ, so there is little waste.
Sadly we only found this on our last day as we would certainly have gone there again.