My friend and I spent a week here. The apartment is very centrally located near Rossio Square - it was super easy to get to all of the main sights. You can catch the Tram 28, which is a 5 minute walk from the apartment; the Alfama and Chiado districts were right next door. The check in process was very smooth. I would recommend bringing earplugs - as it was quite noisy until 3/4 AM given the location - they were lifesavers!