José Luis (Avenida Quintana 456, tel. 011/4807-0606) is an Asturian seafood restaurant that stresses fresher and lighter dishes than most of its counterparts. Entrées are mostly in the US$10 range and up; it’s open Monday–Saturday for lunch and dinner.
The Barrio Norte [1] favorite Los Pinos (Azcuénaga 1500, tel. 011/4822-8704) occupies an old-fashioned apothecary, its wooden cases still stocked with antique bottles and rising nearly to the ceiling. Fixed lunch and dinner specials, with substantial choice, fall into the US$6–10 range; the à la carte menu of beef, seafood, and pasta is not much more expensive, as the comparably priced entrées include a side order. Service is well-intentioned but inconsistent.
Internationally recognized Oviedo ((Beruti 2602, tel. 011/4822-5415, www.oviedoresto.com.ar [2]) is a formal restaurant that specializes in seafood such as a shrimp risotto (US$17) but also serves Patagonian lamb and standards like beef, with most entrées in the US$15–25 range.
Links:
[1] http://www.moon.com/destinations/argentina/buenos-aires/sights/recoleta-and-barrio-norte
[2] http://www.oviedoresto.com.ar