About the location and the flat: excellent location if you arrive/leave at Stazione Termin by train, or you want to use the train that takes you to/from the airport (Fuimicino). Surplus: at Stazione Termini there are two undergrounds (linea A and linea B) going through and some 20+ bus lines have there end station here – all located in a pretty nice park. The flat is just 6 minutes walk from Termini.
The flat and the room were amazing! Marco collects paintings and paints as well! The flat has a very inspiring feeling! You will be on the 6th floor and all rooms have access to a huge common terrace! Big advantage: you will have your own bathroom! The bed was very comfortable!
Marco was an outstandingly welcoming and prepaired host. He gave me a very useful map and the routes of all buses were shown in a portfolio, so you can take a photo of those you are interested in. I could always ask from Marco.
Overall impression during my 3 nights stay: everything was excellent! Thank you Marco!