The cruise was all built in studio.
To reproduce the apartment in Barra da Tijuca, there were many items brought from Brazil to Uruguay, including the bathroom faucets, outlets and even the living room couch.
Barra da Tijuca is a very characteristic neighborhood in Rio de Janeiro. It's recognized by many as a Brazilian Miami, because of its many malls and an extensive avenue that connects one side of the neighborhood to the other. Barra da Tijuca represents a social status.
This is the only scene where Carol is brunette. This happens to symbolize the change when she becomes a Fabulous.
The apartment of the dead neighbor is actually in the condo where the whole series was filmed.