I've stayed in several Airbnbs on my many visits to Rio. Rodrigo's apartment is the best I've stayed in, in terms of value for money.
The main differences I'd like to point out for people who don't know Brazil is Rodrigo's apartment has European/North American level quality features in the kitchen and bathroom. This is rare in Brazil unless you spend a lot of money. He also has central heating, which is a first for me in Brazil and makes a big difference.
Regarding the apartment itself, it's beautiful and spacy with large windows. He also has 2 nice TVs in the living and bedroom, which is uncommon in this price range. The neighbourhood is also great. Lively in the daytime and close to everything, but quiet at night time. Perfect location.
I would choose Rodrigo's apartment every time if available on any revisit to Rio.