My family (of four) stayed here recently and the apartment, though small, suited our needs just fine. We were met at the apartment by a representative of the management company and, though after-hours (for which we were charged an extra fee), the welcome was warm and we were provided with helpful information about the apartment (as well as complimentary drinks and food). We arranged for an airport transfer with the management company and we highly recommend it. The apartment is not the easiest to find, particularly after-hours, and having just arrived from the U.S. it was an additional burden we didn't need to worry about.
About the apartment - the beds are better than most and are comfortable. The washing machine worked great, but as is typical in most parts of Europe there is no dryer so we hung clothes off the radiators. The apartment is right next door to a restaurant, and is very noisy on Friday and Saturday nights. During our stay, there was construction on the apartment below and, while unfortunate, we suspect this was a once-off. The kitchen is well-stocked and fulfilled our cooking needs. The apartment was very clean and was well-equipped with soap and other necessary bathing/cleaning supplies.
As to the neighborhood, there are several very good restaurants within the immediate vicinity. There is also a park about 100 meters away which we found great for our two young children. We walked to the center of Rome, but it was about a 45-60 minute walk (or about 10-15 minutes by taxi).
The management company were in regular contact with us to make sure our stay was enjoyable and that there were no issues. It was a great touch and one we appreciated. Overall, it's a good apartment in a great neighborhood within close proximity to the center of Rome and the tourist sites. The only downside was it was noisy. As someone else said, don't be put off by the graffiti on the neighborhood buildings - it seems to be widespread in Rome.