Bar La Campana, Calle de Botoneras
Located on a small side street just off Plaza Mayor, this bar is one of the most popular spots to grab a bocadillo de calamares (squid sandwich). Bar La Campana doesn’t make much else other than the delicious sandwich, but they do it to perfection. There is usually a queue, but it is worth the wait to watch the staff fry up their fresh calamari just behind the counter. Sandwiches are a steal at €2.70 (£2.45).