Daniela was not in Rio when we stayed at her place. She organized that her relatives handled everything with the keys.
The contact with her on whatsapp was really nice. Everything worked perfectly.
The apartment is very nice and lovely decorated. The location is very close to the metro stop and a 10-15 minutes walk to the beach.
Unfortunately the park next the apartment is quite noisy: kids play and scream there all day and sometimes (weekends?) people gather there at night for drinks. The windows don't keep the noise out.
If you're picky with beds, be warned that the mattress is hard.

Overall we enjoyed the stay at Daniela's apartment.