We enjoyed the stay very much. The apartment has everything that you need, including some basic bathroom and kitchen stuff (welcome food, coffee cups). The beds are very comfortable. For connections to the centre, it is possible to take a subway (a 10-15minutes walk) or to take a bus to the main station Termini (number 90 for example). The neighbourhood is also very nice, across the park is a whole street perfect for nightlife during the weekends.
We were very satisfied and I fully recommend this apartment for your stay in Rome.