Excellent location and quiet. For anyone new to Lisbon, there are lots of hills and, after a full day's sightseeing, it can be quite tiring to hike up yet another small mountain. The apartment is located right in the centre, where it's mostly flat. It does sit on a short, steep street (pictured), which is quite narrow, but this limits the amount of traffic, so noise is minimal. Also, as two females, we felt safe both in the flat, which is towards the top of the building, and in the area.