I stayed 8 nights in Andre's studio and can realtà suggest this place. I know Rio very well and often choose Botafogo for its centrality (you can easily arrive to Pao de açucar, cristo redentor, City center, lapa, copacabana, ipanema). Besides, the neighborhood is vibrant but safe!
The studio is located in a building with security 24h per day. It's clean, modern. Perfect wi-fi and not so hot neither in mid summer.
Andre and Will were super easy and fast and organized very well check-in even if I arrived at 8am of January, 1st
Just the right place to stay to explore and enjoy Rio