Right next to the city center, the flat is only 50 meters inside a neighbourhood that is under a great renovation. What it used to be a poor hood of the city now is being renewed. Nevertheless, there are still some dealers and jonkies around. We had no problem whatsoever with them and we never felt in danger or anything like this but is good to have this information before you make any decision. Flat is ok to spend o couple of days. Good value for money.
Joao was super helpful with us.