Massimo was a very gracious host: he waited outside the door to his building to meet us at checkin (which was hours before the usual checkin, as we left our carry-ons in his apartment). He also gave directions and recommendations for the places we wanted to go. We enjoyed his company as he practiced his Spanish with us.
The breakfasts were quite filling with sandwiches, croissants, milk, juice, coffee, and cereal. The WiFi was speedy and the room, bathroom, and kitchen very clean. The kitchen was compact and the room and bathroom spacious. The kitchen has a small balcony.
The location was very convenient: 20 minutes' walk from the colosseum and forum one way and about the same from Trevi in another direction. Termini station and one of the main food markets are less than ten minutes, and between Termini and Massimo's there are numerous snack places and restaurants. Although the block is quiet, the nearby Termini neighborhood is very active and brimming with East and South Asians, Africans, and Near Easterners.
Overall this is an excellent choice for a place to stay in Rome.