The flat is great - it has everything you need, is spacious, very clean, and gives you a cool escape from the heat with the air con but also a large outside space for dining. The main rail station is only a 10 min walk and is on a direct local line to Fiumencino airport so ideal if you land there. We used the local trains, not the Leonardo Express, which was loads cheaper and not much slower.
Although the flat is a little way from central Rome, the tram stop is only 2 mins walk away and takes you straight to the centre (8) or some of the main sites such as the Colusseum (3). We stayed for 5 days and it was close enough to go into town for a day's sightseeing, go back for a rest and then go out again for dinner. On our first night we decided to walk into the centre, which took about 40 mins, but the Via Portuense is quite dark and empty as you get nearer the town so choose another route if you want to do this in the late evening. Supermarket has all you need and is next door.
Our hosts were really accommodating and it was a very easy and efficient service. I would definitely recommend this flat and would stay again. Thank you Paolo for a lovely stay.