We stayed at Marcio's aparment for one month and it was fantastic. There was a pool, a gym, the area is safe and there was daily cleaning services (I didnt realise this when booking but much appreciated). There's a spacious balcony where you can either eat outside or chill on the hammock. The apartment is well lit and spacious, which made it feel homely, and was perfect after a mad week of carnival.
As for the area, Botafogo is pretty safe, with lively bars where you can experience an authentic and more local nightlife. The metro is right outside, so it's easy to get around (Ipanema beach is 4 stops away)! You have gyms, supermarkets, restaurants and bars all right outside. A few things to consider: the apartment is on a pretty noisey road, the kitchen is slightly small making it difficult to prepare big meals. Nevertheless, this didn't bother us, considering it was such a comfortable place with lovely staff members and a great location. Thanks again!