Sylvia has been a very great host before, during and after our stay in her apartment.
We exchanged many e-mails before we booked the house and she has been quick and kind. She let us have a very early check-in (like 8 am) and also a very late check out (9 pm) and when we arrived she was there waiting for us!
A couple of days before the our arrival she also sent me an e-mail with all the possible useful information about the apartment!
The evening we left, another woman came to check the apartment and she found a little problem with the toilet (slow water!), but then Sylvia and I talked by e-mail and, even if she had spent 50R$ to get the toilet cleaned, she didn't ask me any money, very very appreciated!

The apartment is very comfortable, with one very big bedroom and another a bit smaller, but both with double bed (not sofa-bed, yeah!). There is one bathroom with shower and another in the balcony only with the toilet (useful if you are more than 2 people). There is a complete kitchen and a spacious living room with table, chairs, tv, sofas...
Wifi internet has been working perfectly all time.
The apartment is at the 6th floor, there is 24 hours doorman, there are 2 elevators and it is 2 blocks from Copacabana beach!!! Like 1 minute walking, amazing! The area is very safe and full of shops, restaurants etc!
The building is very old, so don't expect to be in a luxurious place, but the apartment was clean, comfortable and pleasant!
I would definitively reccomend and stay there again when I'll need!