My family and I traveled to Rome for 3 days this past week. We were three adults and one child.
Cristiano and Valerio's place is the perfect one bedroom apartment. It has a great size full kitchen with all amenities. There's a bed in the kitchen which my mother in law slept in. The bedroom had a pull out chair along with a full bed. You have access to a balcony for anyone to enjoy a nice glass of wine after walking all day.
It is walking distance Termini station. Not even a 5 minute walk. Across the street are two markets to buy anything from fruit to alcohol.
You can walk to most sights. You can take the subway at Termini. We are walkers and we did use the taxi when my elderly mother and our child were exhausted. Taxi cabs are plenty around Rome so that's a great option also after walking all day.
We did communicate with Cristiano and he was always very helpful! I would recommend his place while in Rome.