Subway

Address: Avenida de Concha Espina, 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 fast-food place. Handy when you want something quick without much waiting or a formal sit-down meal.

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