I especially like that they serve chicken posole. A small and another dish is plenty unless you want to take something home. They open at 7pm. A perfect night would be to stop in at The Black Cat across the street for a shot of tequila (35 pesos). Very friendly place. Then have some Cena at Elba's. Afterward, walk through the plaza to the churro man. (He's on the main drag in a little storefront next to the Paris Cafe.)