Silvano was very easy to communicate with, answered all my questions, came to take me at the Ostiense station and gave some information about Rome. His place is on the ground floor, next to Marco Polo street. He mentioned that it could be noisy, but we weren't bothered much. Maybe it could be more bothersome in the summer when you need to have the windows open. There is a bus line that passes directly in front of the house and walking to the nearest subway/train station takes around 10 minutes. His place is 2 WC, 1 kitchen and 4-5 rooms shared at the same time with other people. There is no common space other than the very small kitchen. Therefore It was more like staying at a hostel than staying at someone's place.