Location: Restaurante Colósimo, C. de José Ortega y Gasset, 67, Salamanca, 28006 Madrid
Getting there: Lista station
Cozy basement restaurant with Cadiz soul and charming atmosphere
Specialty: Famous runny potato tortilla with caramelized onion
Price range: $$ (30-60)
Pro tip: Must-try: potato tortilla, puchero croquettes, and carrillera canelones
Recommended by @Pitufueros