Arnaldo's apartment is right in the center of Lisbon, easily walkable to all the sights. There are a lot of stores and restaurants below which makes it a very lively place to stay, probably not advisable for light sleepers but was great for me and my family who were visiting the city for the first time. The apartment itself was so spacious, three of us stayed comfortably for a week. Very clean with a washer and dryer. Would definitely recommend staying here especially if it's your first time!