Great and safe location. Beautiful, well equipped apartment. I have nothing bad to say.
There's always a lot of people in the famous square next to the apartment and because of that I felt safe walking nearby even when it was late at night / early mornings. The noise was not a problem at all.
On Sundays, there`s always Chorinho musicians in the square, it is really pleasant to sit there and listen to them for hours.
I recommend tasting the `açaí` and some juices from Tacacá do Norte, a nearby store that serves traditional food from northern Brazil.