We (my wife and two adult sons and I) had a fantastic stay. The apartment is really lovely -- fully renovated, beautifully furnished, sparkling clean, spacious, and very comfortable. We were so comfortable we almost didn't go out! We had no problems with the apartment, everything worked fine. The building is great too: very clean, in great shape, very quiet and secure (we loved the friendly but diligent 24 hour doorman!) but still only a couple of minutes walk from the Copacabana beach, great restaurants, bars and shops. Leme is a great area! There's also an amazing forest view out the back windows of the apartment that makes it hard to believe you're in a bustling urban environment.
Belinda is a wonderful host. We booked at short notice after a last-minute change in plans, and she responded within minutes to every one of our questions and requests. She's very friendly and helpful, and extremely knowledgeable about Leme, Rio and Brazil. (We got some great tips from her, some of which will have to wait until we return, which will hopefully be very soon!) She speaks perfect English - in fact you would think she was American. So many Brazilians claim to speak English but have a really strong accent and very limited vocabulary. Not her, she is clearly bilingual. I guess her mom is English, so they grew up speaking English as well as Portuguese. We didn't have time to take advantage of the fact that she's a licensed tour guide, but I can imagine she'd be an excellent guide! In fact she told us she was recruited to host corporate guests for a major US corporation at the Olympics in Rio and in South Korea, and that she'll probably be going to Tokyo too. That didn't surprise us at all. She's also a lot of fun - she had my two sons laughing in no time, and that's no easy feat.
In summary - we highly recommend Belinda and this apartment! We can't wait to come back.