First, location is great: The apartment is located very close to Piaza Navona (2 minutes) in a beautiful area in Rome in a walking distance to pretty much all toursit sites. The street itself is filled with restaurants and good vibe.
The apartment itself is very comfortable for families (we were 2 adults and 3 kids); it has 2 updated bathrooms and a nice, well equipped kitchen. The apartment was very clean and ready upon our arrival. I would note that the apartment is located on the 2nd (or 3rd floor) which requires climbing up stairs.
Last but not least, the host - Andreas - was very reposnsive and communicative and always ready to help.