Sell your apartment in Leblon.
Leblon carries the highest apartment prices per square metre in Rio, and it earns them on the two things that never come back into supply: space and quiet. The blocks between the beach and the lagoon — Rua Dias Ferreira and its restaurants, the leafy interior streets, the family buildings with real square-metrage — trade on scarcity. Good units here are held for a long time, which means when one comes up, the buyers are ready.
For a seller that's the whole story: the demand is there, the risk is leaving money on the table by mispricing or presenting the apartment as if it were anywhere else. Leblon buyers are discerning and often local; they know the buildings, the floors and the going rate better than any portal. Selling well here means pricing to the specific building and reaching the handful of people actually looking — not casting wide and discounting later.