Good relationship with Marco (who has an excellent english level) who was available and was helpfull when we arrive to his flat.
The flat is fully renoved and very well decored (a little hot since at the highest level of the building). It is located in an area with various restaurants and snake-bars so well animated during the evening. In addition it is closed to the termini station (10-15 minutes walk) with a lot of transportation facilities. Marco help us to find a park for our car (Park Giolitti is modern, not expensive, safe and close to the Termini station and the Marco's appartment).
Different shops are very close to the appartment as well. All thinks were easy !
So we enjoyed really this flat and is very well located in Roma. I recommend it for sure!