To begin with, Anna Rita's apartment has everything you might possibly need (or even use during a city break, as was the case for me). The apartment was very clean and tidy. The bathroom had a lot of stuff you might seek in a bathroom, so except for a toothbrush I could have not packed anything. In short the apartment offers the same things you would be offered in a hotel.
Anna and her husband already had something for us to eat for breakfast as our check-in was really early (which I would like to add, was also possible).
The location was perfect. Away from the city center, however close to a public transport node, Tiburtina. As such there was a direct train from the airport to Tiburtina leaving every once in a while (i don't remember the exact schedule but it was at least every 30 minutes). There was also a Metro station there. Further, and the most used by us, it is the end of the line for a lot of busses. So no matter where we went we could easily by changing just 1 means of transport (either take a bus to a metro, or take a bus to get in one of the buses that stops at Tiburtina) get back to the apartment.
We did not ask, but relied on the GPS to find the apartment initially which was not a great idea - it made our typical 4 minute walk from the apartment to the metro take about 15 minutes (as you got to go around a set of traffic bridges, and the GPS shows a rather scenic route). If you arrive at a decent time you can follow any of the locals as everyone is usually going the same way from the metro.
There are a few places to eat nearby which offer quality food and sweets without the expensive tags of the old town center (be sure to visit the places recommended by Anna).