El Brillante

Address: Plaza del Emperador Carlos V, 8, Madrid. A quick check on the map can help confirm the entrance and the easiest approach.

Looks like they're open every day, so you don't need to worry about timing your visit around a closed day.

According to available data, this is a restaurant. Better suited to a more relaxed visit, a full meal, and a sit-down experience.

Cuisine: spanish, bocadillos. Gives you a general sense of what's on the menu — useful if you have a preference or dietary restriction going in.