Wow! I arrived during the World Cup and Claudia and her family host like a true Brazilians. From the day I arrived they made sure I'm familiar with the area. They help me to get a SIM card for my phone, showed me around the Copacabana and even picked me up from the Airport.
The house is very clean! A cleaning lady comes twice a week.
Also, the location of the house is amazing. A block from the Metro (subway) and 3 from the Copacabana beach.