The apartment was great, it had everything needed for a 4 night visit. Was a short walk to the tram, train station and bus. Lots of eating and mini markets very close within 1/2 block. The downtown area is very walkable from the apartment, just remember Lisbon has lots of hills so be prepared. The Portuguese people speak mostly good English and are very friendly. The host was always very timely to respond to any questions you might have, he also arranged a ride to the airport for us.
This is a multicultural area but we always felt safe, plus the building and its surroundings has great security.