I stayed at Guilherme's and Jualino's place for three months. It was a remarkable experience. Communication was always quick and effective, the house is clean and organized, and the views are stunning. It is located 7 minutes walking distance from Catete's metro station, and local grocery stores, pharmacies, and eating spots. Great place for a short or extended time in the city. Also, the puppies and cats are awesome.
Safety was never an issue during my stay, it is a residential area with people on the streets most of the times.