Porto's metro is excellent, and we will tell you honestly when it is the right call. But if you land after midnight when the metro has stopped, if you are dragging suitcases to a hotel in the Ribeira or up the hills of the old town, or if you are a family or a group, a private transfer earns its place. Your Swingo driver waits at arrivals with your name, tracks your flight, and takes you door to door in a comfortable electric car, eleven kilometres from the airport to wherever you are staying, with no steps, no cobbles and no transfers in between.