Chan Chan is my new favourite restaurant because it ticks all the boxes; great food, great price, great atmosphere, casual, and the decor is uber-kitsch and fun. I honestly don't know how they keep their prices so low. Dinner for two last night cost 75 pesos and you are hard pressed these days to get dinner for 1 at that price. The place always has a healthy number of tourists gracing the tables too, which usually drives prices up.
It's this type of place that keeps me happy and stops me from losing faith in the ever-crazy world of inflation in Buenos Aires. Thank you Chan Chan!