I didn't meet Roberto but his friend Francesco was very nice and helpful from the moment he welcomed us at the front door. It was my second time in Rome but this was a much better experience as far as accomodation is concerned. The first time I stayed in a 4* hotel and the service as well as the room facilities didn't match the rating. What I did appreciate in Roberto's studio was precisely the honesty of it all. The photos totally correspond to reality. What you see is what you get! Plus friendly attitude from the host and unexpected amenities (such as drinks and coffee powder in the fridge).
Francesco was always available and indeed he was helpful at all times.
The studio is located in Prati, a very lively and central neighborhood. Though the studio was quiet which enabled a good rest after a long day walking.
I would just draw your attention for the small shower box. It is rather tight. For taller and heavier people it might be a problem.
Finally Franscesco was very nice allowing a late check out.
I would definitely recommend this studio.