We had a wonderful time in Rome and the host Carmen / friend of host Sam who was there for key handover on behalf of Carmen were both very welcoming and helpful, even giving us an annotated map of Rome which came in very handy for our sightseeing trips, thanks a lot!
The studio flat was clean and as described on the photos, in a very convenient location -2min walk to Roma Termini the central train station, and 10-30min walking distance to all the sights. In the four days we only needed the metro to the Vatican and even that we walked once about 45min. From Roma Termini there are several buses each hour to both airports (take about 1hr).
The neighbourhood around Roma Termini is not the greatest, looks a bit rough, but the flat had multiple locks and was safe and soundproof, there is no need to be put off by the area.
It gets a bit hot during the night but Carmen's big fan came in useful, there is even a mini fridge if you're still too hot ;)
We would recommend carmen's studio flat and be very happy to stay there again. Thanks Carmen and Sam!