I stayed only 2 nights at Federico's and the room was perfect for a short stay. I have to say that the room on the photos was already busy so I booked another room with a single bed which was enough for me. It was clean, so was the bathroom and the kitchen. Federico and his girlfriend were very welcoming.
About the neighbourhood it was quiet and around 20 minutes from city center by bus but you have to know wich bus to take and the schedules, it's not easy when you don't actually live there.
To sum up, a good place to say for a short time in the city.