I've heard that the food around Puerto Madero is not that good. The "famed" Las Lilas gets either rave reviews or slamed as too touristy and expensive. Well, I tried somewhere different on my current, short trip to BA.
At Bahia Madero in Buenos Aires, my first meal of this quick trip. Dinner is fried provolone with EVO and fresh herbs ($4). Broccoli with cheese ($3.5). Two 8 oz filet mignon with mushroom/red wine sauce ($12.50). One bottle of Terrazas Malbec ($16)
The beef was every bit as good as Las Lilas where the filet was $20.