Southern Brazil is different from the main cities such as Rio or the Amazonas area. Florianopolis is half sitting on an island that enjoys wonderfull large beaches and half on the mainland.
Favourite spots:
Iguazu Falls The Beaches on the island Blumenau - kind of a Black Forest Town right in the middle of a subtropical rainforest
What's really great:
the nice city of Florianopolis and the relaxed pace of living.
Sights:
Caribbeanlike small islands with old fortresses on them.
Accommodations:
Rentalappartments - luxury but afordable especially during low season.