A very good option at AltaPlaza to have a good lunch. I understand this is a Colombian chain, and they really have people trained and willing to provide a good experience and a good service. I tried the Vacio Steak, which is an extremely popular cut in Argentina. It is exceptionally tender and has a rich flavor. Not too fat but not dry. You are allowed to serve the buffet, a kind of salad bar with some hot accompaniments as well. The steak has like 460 grams, it is very thick and can be easily shared. The place is confortable, good for small and large groups. I strongly recommend this restaurant.