Really enjoyed our stay in Joaquim's apartment. As others have mentioned, check in was done by Joaquim's friend Nuno who was there to meet us & he showed us all the things in the apartment, and also a secure place downtown where we could leave our luggage after checking out. Joaquim was in touch before our stay with handy details, and during it to check everything was ok. Apartment was clean and as expected. The roof terrible turned out to be accessible by outside stairs but this did not matter, and it was a lovely place to sit & relax with stunning views. Really liked Principe Real, a safe lively neighbourhood, slightly cheaper than city centre but still easy to reach major sights. Would definitely recommend both this area and apartment to anyone looking to visit Lisbon.