The location of Alex's apartment was perfect for me: right across the street from the beach, with several supermarkets, juice bars, restaurants, banks, local transportation within 2-10 min walk.
if you need taxi, use 99taxi or Uber apps :)

The beach area (Posto 3) is not the busiest in Copacabana which I liked a lot. Vendors and eateries are plenty at any art of the beach, if you are worried about that.

Alex was a good attentive and responsive host. He was flexible with check-in/out times to accommodate my flights. Thank you for that!
It was helpful to have Rio tour brochures & maps in the apartment to help you plan places to see.
I enjoyed my short and sweet stay in Rio and hoping to be back.