The best beef fillet and overall the best meat I've ever had in Argentina. Excellent quality cut, cut to perfection. Everything else on the menu is also really good (especially the fish), but the meat is on another level. Truly excellent service, as well. Not just professional and yet friendly, but they really do go the extra mile. I ordered a cup of red wine and asked that it not be cold (the Argentinians like red wine served cold, I don't), so they opened a new bottle that wasn't in the fridge for me (at the table). Portions are generous and prices very reasonable, especially considering the excellent quality. The restaurant opened in 1981 and probably hasn't changed its menu since. Which is not necessarily a bad thing (it if ain't broke, don't fix it), just don't expect any "modern twist or interpretation", but do enjoy super classic and excellently made food. Highly recommended.