My husband and I stayed at Katja and Massimo's place for four nights. The house was very clean and we had all the amenities we needed. The room was enough big and comfortable, the bed was a bit hard for us though. It even has a table for four. Also, Katja and Massimo were attentive. They always took care of us.
The location was a bit far from the city center. It was acceptable considering the price though, the metro did not come very often (every 10-13 minutes) and it was super crowded especially in rush hour. In addition, people living next to the house was noisy in the morning, at around 6:30am, and that made us wake up.