FINAL VERDICT (full descriptions below) - A 5/5 stars easily. Value for money unparalleled, hosts were beyond accomodating, helpful and available. Prime location!
By far the best Air BnB I've stayed in while in Rio. Rio is my favourite city in the world and of the 6 times I've been, 4 have been at an AirBnB.
Location - Absolutely perfect location only 3 blocks from Copacabana Post #3. Great cheap restaurants in the area (if you stick to the advertised executive lunches / Prato Freito). Grocery stores within a block and metro station ("Sequeira" I believe) 2 blocks away.
Apartment Itself - Single Bed with a rollout single, a foam sofa bed in the living room and a hammock. It was only me so it was more than spacious enough. Lots of storage in the built-in shelving, full small kitchen with water filter and ensuite in the bedroom. It was very, very clean and cozy. Internet worked great as did all the appliances I used. Very safe building with a night guard at the front and lots of locks + chain on the door. Street is loud, specially on the weekend but it is Rio after all. It is a mixed area with lots of local commerce and tourists so always stay alert while walking the streets (that applies anywhere though). Overall I would say the area felt very, very safe.
Amenities - They have a hair dryer, drying rack in the bathroom if you wash anything by hand (very helpful), they had a towel and bar of soap for me, all linens were clean and smelled fresh. Internet worked great, they have cable TV (I never used it though).
HOSTS - André & Fabi were beyond accomodating and helpful. I was stuck at the bus station because Uber is blocked there, you need to walk outside 2-3 blocks away in order to order one. I figured it out but was late for my check-in. Never did they complain and stayed in touch to make sure I was OK. Fabi speaks perfect English as well. They offered me a super flexible checkout and even took my bags to her mom's apartment my last day so I could enjoy the beach before my evening flight. They even hung up my clothes to dry while I went to the beach. Absolutely above and beyond what I would hope to receive from any host. They even refused to leave my side until my Uber arrived to take me to the airport. 10 out of 5. Beautiful souls.
Highly recommend their place.