We came late at night to Lisbon airport and arranged to be picked up by Ulrik´s recommended driver. She met us and got us right to the correct door, which I don´t think we would have managed alone in the dark. It is fine to take the metro back to the airport when you have your bearings. It is a good little flat right in the middle of Alfama life. It can be a bit noisy but I think this is just part of living in Alfama. It suited us fine for a long weekend. A good walking distance to the main square and then you can get a tram to Belem.