Spanish Cuisine. Bar & catering Restaurant Guardado's serves up authentic, flavorful dishes from Spain and Latin America, in a casual and inviting atmosphere, in the heart of Bethesda, Maryland. Chef Nicolas Guardado and his wife Reyna opened Guardado's Restaurant in 2007. Guardado brought with him a wealth of experience, rising through the ranks at local-area tapas restaurant Jaleo to a seasoned head chef.