It is very safe. You will get a key to a gate for the complex and for the sliding door that is the entrance to apt. It is part of the house but separate, and you hear nothing from the house. Just like the photo, you can see the Duoro from the apt, and there is a space you can sit out to enjoy the area. Although it is set up and away from the road, the road is the one that directly goes into the city, so public transportation, Uber etc. are quite easy to get.