In some areas the sea is advancing, swallowing beach and everything unprotected.
Some friends of mine bought an apartment near Recife, and their beach... is gone.
In Olinda it's easy to see the struggle to sustain the sea. To win or to loose? If you plan any kind of investment pay attention to your chosen area!
Choose your beach in Buzios
Buzios is a peninsula, with beaches all around it (26 I think!), suitable for all the tastes, except for those who like cold water - we don't.
So, in the few days we spent there, we tried several places, all reasonably warm (considering that we were in winter) and, with ease, visited all the peninsula.