Arco Iris
This restaurant in the center of town is one of the many typical and popular tenedor libre (all-you-can-eat) parrillas on the main strip—nobody orders à la carte. Skip the Italian buffet and Chinese offerings and fill up instead on the grilled meats and morcilla (blood sausage). Sit by the interior window toward the back where you see the parrillero artfully coordinate the flames and spits, and ask him to load your plate with the choicest cuts.