We highly recommend Rafael's place. He is a great host and this is very good 2 bathroom, 2 bedroom apartment just a 5 min walk from the centre of Copacabana Beach. Best value!
We are 3 Canadians, parents (age 60) traveling with our teenager through South America. (S.A.) What we loved about the place:
+ Both bedrooms have Excellent AC!
+ Both Bathrooms were recently renovated so the tiles are new, and showers are very good. (However, you must put TP in the trash can, nothing into the toliet because its older plumbing but that is common in S.A.
+ The kitchen tiles and counters are like new

+ Wifi was excellent!
+ Washing machine and soap was so handy, and there is a side hallway inside the apartment that is perfect to dry your clothes on the provided rack
+ Beach equipment: an umbrella, two chairs, and a cooler provided- which us a must to enjoy the beach !
To be fair to other AirBNBs that we've stayed in on our S.A. trip, I can only rate this as 4 star overall, because there were a few problems, and because some of the interior items were not quite as nice as I hoped, but this may just be Rio standard.
IF you are fussy, I would recommend to bring your own towels, and pillows. At a store just 2 doors down, we bought very cheap towels for the beach, and travel pillows for only $5 US.
The Host, Rafael was very responsive, quick to fix things so we would be comfortable, and he even helped our teenager get our Brazil chip / sim card to work! Rafael is also a wealth of information about the area. I really wish him all the best and success.