This was a very comfortable stay for a family of 4 (2 adults, 2 teenagers). The apartment is very spacious and comfortable, has two full bathrooms, a washing machine/dryer and a kitchen with everything you need to cook for yourself. The hosts were very friendly and responded extremely quickly when we had questions or small issues. The neighbourhood is nice and safe - a very authentic Rome experience. Two supermarkets are extremely close by, as is the bus stop (about 75 metres). The buses give good access to the city centre, but we found that they were a bit unreliable and didn't really run to a timetable. You just have to wait and hope that one shows up - we waited anywhere between 2 and 40 minutes and it was about the same when returning from the city. Once on the bus, it took around 20 minutes to get to/from the city centre or about 7 minutes to Trastavere. This, of course, is not the fault of the hosts, but needs to be kept in mind by future guests when you need to be in the city or making a connecting bus/train/flight by a particular time. Around €12-15 gets you a taxi ride into Termini station in around 15-20 minutes.
Overall this apartment is so much better than a hotel for a family and gives you a very comfortable and interesting Rome experience. Highly recommended!