Franco's apartment was perfectly located for our family. Our children are 8 and 10, and we were able to walk with them to all of the main tourist attractions, including Vatican city and the Colosseum. It is in Trastevere, but slightly outside the main tourist drag--with an easy 5-10 minute walk to bars and restaurants. The block itself has a cafe, pizzeria, ramen shop, and several small stores for basics. I might also note that we were able to walk only a few minutes in the opposite direction to some truly local and interesting non-tourists restaurants, and this was a highlight for us.
The apartment itself was immaculate and spacious enough for a family of 4. It has great sunlight. The beds and mattresses were comfortable, and there are two bathrooms! The apartment was incredibly well stocked. Franco had provided everything for a simple breakfast and many snacks, cookies, wine, juice, milk, etc.
Franco is a fantastic host of the old-fashioned airbnb kind. He met us on the street when we arrived, showed us the apartment, and he is always available for questions and/or conversation. My husband left his glasses in the room and he sent them to Spain for us. We highly recommend this airbnb.