As said in all comments before: Very clean, nice and spacious apartment which fits perfectly well for a family of four. Everything is clean and modern and works well. We enjoyed the sunny garden, there's sun almost all day.
The location is not right in the heart of Trastevere, but with the tram every sight is in fast and good reach. You have an easy and quick connection with the station nearby.
There is a railway right next door, but you don't actually hear it that much. It's not the most silent place on earth of course, but for a big city the nice sounds of birds in the garden are even louder than the city noice. The Tiber river with a very nice shore for taking a walk is just a few meters away. We rented e-scooters and drove along the river to the city center which was good fun. We really enjoyed our time in the apartment and Maria Rita provides an easy time and a lot of helpful information and guides. So, totally recommended.