Looking for Recs in Buenos Aires
Well, like the title says.
It doesn't matter if it's fancy or a whole in the wall, only stipulation is that the place serves great regional food! Heard a lot of about the steak in Argentina, so some rec for steak in buenos aires would be great.
I would suggest Guerrin or Cuartito for pizza with faina -- not that this is particularly amazing, but it is different at least. There's a good Catalan restaurant downtown called Tancat that I recommend if you like that kind of food. In general, I think the food in Buenos Aires is not that great, though there are some interesting more modern restaurants in Palermo.
The places I like best are the holes in the walls that are called parrillas, or grills, which is where you'll find all the famous Argentine meat. They are all over the city, if you ask someone on the street where the parrilla de barrio is they can probably point you the way. If you're in the microcenter on Talcahuano between Corrientes and Sarmiento there's a great dive that has really fresh sauces (many places only use dried herbs) and a very talkative old dude at the grill. Most parrillas have pretty much the same menu. Choripanes (literally chorizo and bread) are great if you want something cheap and incredibly tasty. Provoleta (cheese from the grill) is worth ordering along with whatever cuts of meat you prefer. Some places will have locro, an Argentina specialty, which is good to try as well (El Quebracho in Corrientes 4390 would be a good low-key option to try locro, cazuelas and humita, similar to Cumana which was already mentioned)
The Peruvian food is also really good due to the huge Peruvian community, in the Abasto neighborhood (around Corrientes 3000) there are lots of neighborhood places. The places are almost exclusively patronized by Peruvians, really good for fish, seafood, and rotisserie chicken (pollo a la brasa) and many of them have great inexpensive lunch specials.
I can recommend a couple that are not steak:
Sette Bacco in Recoleta, Italian
Astrid & Gascon in Palermo, Peruvian
Crizia & Cluny both in Palermo are good.
All of these places they tend to have an older crowd as they are more expensive.
I'm a big fan of Cabrera. But I can see how it's not fun if you are in town for a just a few days. Most people will be foreigners. Don Julio as well is filled with tourists. It's good too but I like Cabrera better. For a less touristy good meat options try DesNivel in San Telmo on a week day afternoon. NOT on Sunday!