We have just spent 5 days at the apartment with our two kids and had a great experience.
We were met by Grazia who was very helpful and informative. The apartment is as advertised. It is very well equipped, has a fantastic internet connection, laundry facilities and a great big balcony which we enjoyed using on a daily basis. Downstairs is a great pizza restaurant, coffee shop (great coffee and pastries) and bar serving aperitivo every day. In addition to that, there are a few supermarkets (one next door and an even better one called Super Elite about 5 mins walk away). There is also a small kiosk selling tram tickets directly next to the apartment. On Sundays there is a huge market outside the apartment stretching some way along the road. There is also a huge clean up operation once the market has closed- the road was spotless afterwards.
I had read some earlier comments complaining about how the apartment was quite far from the centre which I did not find to be the case. My 9 and 5 year old had no problems walking in and out of the centre for the duration of our stay. The tram lines 3 and 8 are also really close by for those who prefer not to walk.
One word of warning - do not rely on Uber to take you to the airport. We ended up trying to hail a taxi on a very busy Monday morning after our Uber told us they could not take us to Ciampino. Next time I think I would definitely take up the offer of booking airport transfer!