Lunch around Madrid Atocha Station
There are lots of places (and many outdoor terrazas) closeby on calle Argumosa. One of my favorites is O'Pazo at Calle Argumosa, 28. It's down-home Galician food. Really cheap tapas at the bar, a full-service restaurant in the back, though we prefer to order from the bar menu and sit at the tables in the bar area. Almost all of the grilled stuff (like secreto iberico; chuletón) is good. I also like their cheesy salad. If you get there around 1:00ish you won't have trouble getting a table.