The apartment is a good size.
It's in a lovely neibourhood, very quiet. Its 10 minutes to everything, the beach, restaurants, bars and the subway. The location is away from the busy areas of Rio, a quite residential area. However a 10 minute walk will get to decent restaurants and bars with a lively nightlife. The daytime offers a great beach to enjoy.
The subway will get you to Copacabana in 20/25 minutes. The subwayis easy and safe to use. In an uber it takes longer and is £10.