I spent a month in the flat, working most of the time there so I can say it’s a great place : amazing view, perfectly furnished, really great if you want to spend time there. 50m internet + Apple TV + 120 sqm with AC and a large balcony make your time in the flat pleasant. The neighborhood is really central, you can go to Ipanema in 30-40 minutes by foot and there are some cools restaurants in the 15 minutes by foot range near Jardim Botanico.
The only drawback of the flat is that you have to take the taxi for everything if you don’t want to walk, which is not a good idea during the night after 6pm or when you need to go to the groceries. The road around Lagoa can be really stuck with traffic. So you definitely have to plan to take the cab everyday and spent time in the cab.