We were 4 people and stayed in Livia's place for 3 nights.
The apartment is absolutely amazing, located in one of the best neighborhood in Rio and with all the amenities needed (even a guide of the city and of Brazil in general).
Even though Livia was not physically there, she made us feel at home, always ready to help us (her neighbor Cristina welcomed us with a coffee and a cake very early in the morning!!)
I am sure to return to this apartment my next time in Rio! I can not wait!
I really recommend it!