Great communication with the Host all the way through , we arranged for a Taxi to pick us up from the Airport. There is also the Metro very close, 3 minute walk which makes traversing the city very easy and fast.
The Main trainstation in 1 stop away or a 15 minute walk, which also has a direct train the airport ( FCO ).
The apartment was spacious and a good place to setup camp, the Colosseum is only a 10 minute walk . there isn't much of a view ( which didn't bother us ) but we found it to be really quiet and cool temperature wise.
There is a good resturant right below and 2 mini-markets very close to stock up supplies.
Would recommend , Thanks