We spent two nights in Porto, and loved every second we were there. The apartment is located in close proximity to main attractions and new trendy district, yet within walking distance to the riverfront. If renting a car, you must find street parking (almost impossible during the summer) or park at Tribunal da Relação do Porto, Campo dos Mártires da Pátria 4099, 4050-366 Porto, Portugal (closest one, but pricey).