Google has it. The link on the 1st page -
http://enpuertoplata.com/images/mapa_provincia_ptopta.pdf
You can see it on the map. PDF is searchable.
For this particular area, this map gives incorrect location. The area that is called Los Sufridos in the map, is actually called "La Limonera", and is no barrio at all (in the class sense).
If you replace the Los Sufridos with La Limonera, and put Los Sufridos between Padre Las Casas and La Limonera, you have it correct.
There are some very poor and also bad looking housing, but also a few better houses. Unfortunately Los Sufridos also hosts a decent number of criminals.