First, location of course.
Out the door of the building, turn left, go two streets and turn right: supermarkets, a great café, and a bank with ATMs. There are other shops and food places on the same street as the apartment and within a minute's walk.
Out the door, turn right and then left: a few streets to the beach.
Second, ease of getting around
In addition to walking to most anything you need, there are numerous buses right in front of the building and many taxis drive along the busy street
Third, quiet
Though there are buses and taxis at the front, the apartment is on the back on the building and there is zero noise from the street.
Fourth, general
The wifi was great. The apartment is fully equipped including with a clothes washer and two full baths/showers. And it is air-conditioned.
Alessandra graciously met us on departure and she had arranged for the concierge/porter to let us in.
Definitely would stay here again