Pros:
Great location for a reasonable price, close to General Osorio metro station, good internet, clean, quiet, host is a nice guy, building with a doorman - safe and secure.

Cons:
You need to pay the electricity bill, for my 10 nights stay it is happened to be 50USD, which is a lot to my opinion. No shampoo, shower gel, etс - bring your own, we bought a couple of wine glasses so now they are available:)

Generally the impression is good, considering the price for apts in Rio, Gerson's apartment was a smart choice!