José Miguel de La Barra, 455
tel: (0)2 597 0329
What Café de la Barra has going for it is its tasty and plentiful lunch specials, good coffee with abundant frothed milk (if you like), good soups, Argentine-style croissants filled with Nutella or manjar (cream caramel), and a great location with a slightly tchotcke-filled interior without being over the top. It has a pretty tiled floor, a classic feel and cute touches like the tart pans in which they deliver the (very reasonable) bill.
It's a great place to take a minute to relax in Bellas Artes and gander an eyeful of the occasional farandulero (society-pager) that pops in, and making use of their never-fail WiFi.