Loved the three day stay at Vivane's place. Her brother, Eduardo, was there to welcome us at our arrival. He was very friendly and helped us with the best places around that area.
The location of the apartment is really good (5 min walk from the Copacabana beach) and it is a very safe neighborhood. Viviane's recommendation for a guide (Claudio) was also great (although a bit on the expensive side), especially if you want an English guide.
The apartment is smaller than what it looks in the photos, but a great choice overall.