No favela near Ipanema or...
Surely D.Lurker is joking. All the beaches on the south side of the city (Copa, Ipanema, Leblon, and ___ (I forget the name of the fourth) are far removed from any favela. We swam at Ipanema and walked around the others--no sign of crime, criminals, or unfriendly people. Just lots of Brazilians and a few foreigners enjoying the city.