Myself and my boyfriend stayed at Dejanira's place for 10 nights for our first trip to Rio. I couldn't have picked a better place. The location is fantastic - bars, restaurants and clubs within a short walk, a supermarket next door, laundrette around the corner, bank, basically everything we needed for our stay. The metro is a half mile walk away and is really easy and cheap to use, meaning we could go off to the beach for the day, or explore other tourist attractions such as Sugar Loaf mountain and Christ the Redeemer. There are a couple of parks nearby which were handy for my morning runs. The other residents in the building were friendly and there is a 24 hour concierge. Despite being surrounded by nightlife I didn't find the apartment noisy and had no trouble sleeping. We used the kitchen facilities for breakfast and they were perfectly adequate for making scrambled eggs etc.
The check in and check out were very simple and Dejanira has a hand made guide with some really good suggestions.
Absolutely loved Rio, and would definitely return to this apartment.