We really enjoyed our (short) stay at Aida's Haven. Alexandra and Catarina are wonderful hosts, who were there whenever we had a question. The communication was excellent. For me the flat is perfectly located in a quiet little street with lots of cafés and restaurants around to be reached within minutes. The metro is near too, connecting you directly to the airport or the train station Campanhã, from which our train ride to Lisboa started. By the way, Porto is a lovely city worth staying much longer than two days. Next time.