We had a great stay in Rio at Viviane's apartment. It was just the right size for 2 people. Air conditioning worked well, good wifi, lots of storage space if you'd like to unpack, and a well-stocked kitchen. It's not fancy, but comfortable & convenient. Eduardo provided a helpful list of local recommendations & was very accommodating (even with our 3am departure for the airport!), and Viviane was very patient dealing with our complicated travel plans. Neighborhood & building felt safe, even at night.