You must and i mean must...try the Ojo de Bife in 647 Dinner Club. I was really surprised to discover that the best meat in the city was not to be found in one of the highly touted Parilla's. 647 looks great which in my experience means at best average food...and at times terrible food. I only found 647 through an Argentine friend who gave me the recomendation, the concierge in my Hotel kept trying to send me to places that could only be described as tourist traps. My last night was spent eating the best steak of my life and i am not exagerating...so try and let me know on the blog how it was.