Had a terrific time in the Nano Apartment, it is located in the heart of Ipanema steps away from all the best shops, restaurants, metro, and most importantly, both Copacabana and Ipanema beach. It is located in a very safe neighborhood, there are even private security people sitting on each block at night who are very friendly.
The apartment was small but served the purpose of having a place to sleep and home base. Brunello was incredibly helpful the whole time as he provided helpful tips on the apartment, Rio, and responded to any of our questions within minutes every time. Highly recommend.