Lambuzo
This laid-back Andalusian barroom, one of three locations (the others are in Retiro and Chamberí), embodies the joyful spirit of that sunny region. Let the cheerful waitstaff guide you through the extensive menu, which includes fried seafood, unconventional croquetas (flecked with garlicky shrimp, for instance), and heftier shareables like creamy oxtail rice and seared Barbate tuna loin. The ensaladilla rusa (tuna-and-potato salad) is one of Madrid's best. In summer, outdoor seating is in high demand.