This apartment, located very near the Piazza Navona, suited our party of three just fine - we had much more room than we needed. The apartment is large, and it was really nice to have the courtyard so that you are away from the street, but still very much in the middle of everything. The street is mostly a walking street, with a taxi stand nearby. All the major sites of Rome are close walking distance away, and there are some terrific places for food and beverages nearby (Da Francesco was a stand out).
The apartment won’t win any prizes for decor, but it is large and has two bathrooms. While it is true that the two twin beds in the second bedroom are very small, my nephew, who is six foot one, pushed them together and was very comfortable. The heat works well and the couch is comfortable. While you are on the first floor, keep in mind that the first floor is not the ground floor in Italy, so you have to take your suitcases up a flight of stairs. This was no problem for us, as we had Joe, and also Simone, who checked us in, carried them up for us. The double bed in our room was quite comfortable, which is not always the case in my experience.
The hosts were great about communication. The neighborhood is a terrific place to stay in Rome. I recommend this place for sure, and I felt it was a good value, plus they have a flexible cancellation policy. The place was clean and there were lots of pillows and towels.