The studio is incredibly centrally located and beautifully arranged and everything you need is there. We asked to check-in before the usual time because our flight arrived early and it was no problem at all, Antonio and Mario even sent us photos of waypoints to arrive from the airport at the apartment. When we arrived Antonio waited for us and welcomed us personally with two small Muscatels, telling us a lot about Porto, it's people and tourism there. When asked about specific sights or events (like a fado concert or the best Port wine cellar) he always helped us super quick and we really liked his recommendations. Absolutely awesome stay.