If you go

PORTO, PORTUGAL: http://www.visitporto.travel. Located three hours by train from Lisbon. Stay near the Clerigos Tower in the Vitoria neighbourhood, the centre of nightlife and only a 15-minute walk from higher-priced tourist spots near the river. Also, try francesinha, a Porto specialty that’s like a meatier croque monsieur. Cafe Santiago near the Coliseu music venue serves up a gut-buster drenched in a tangy beer sauce, and locals like the francesinha at Cufra on Avenida da Boavista.