I stayed at Bruno's apt more than 1 month, and I can say, that I felt safe in the area. Metro station Carioca, supermarket are close, you can also buy smth (like wine:) on the gazolin station nearby when the regular shops are closed.
The apt has everything for living, Bruno is always in touch and ready to help with advices.
The bed is very good, and the mattrass seems to be orthopedic (which is important to me).
The doorman works 24/7.
Near the exit door you can find a good italian espresso (i asked, they really offer italian coffee:)
Summing up - if you dont search for a beach place and ready to live in downtown, this studio-apt can suit you well.