The appartment is a great starting point to explore the city and to get a good night rest. Almost next to the appartment there is a great bakery to start the morning. The metro isn't far away, but also by foot you get fast in the historical centre and like our host put it, the best way to visit is walk down to the city centre and in the evening take the metro to return to the appartment. We recommend this place and would return if we get back to Porto.