All right now,

we returned from Roberto's flat last friday. Let me share our experience in English- more People will understand an english Review than a German one.
Organisation: Communication was very fast and friendly from the very first Moment.
Arrival: Roberto organized a pick up Service from the Airport. We were a Group of 8 People. As promised, the Transfer was fast and cheap. Roberto's Driver was waiting for us and helped us with our luggage. He took us to our appartment within 30 min or so. Perfect!
Appartment: Wow. Big enough for 8 People (!), very nice interior (and I am a bit spoilt here), some Basic Food and Drinks waiting for us, VEERRRY clean, kitchen big enough again, to prepare Food for everybody. Beds with really good matrasses, yes you can hear the Sound of glasses clinging in the Restaurants in the street when the widows are open, but this calms down at midnight or so and I like the Sound of People enjoying live a lot anyway. We get more water in our showers in Germany, but I've been to Rome before. Compared to my experiences in earlier times there was a torrent in robert's showers! Hard to find anything better than that in Rome I guess.
Location: central. So only old and narrow streets, very romantic, but you aren't the only one who likes this, meaning: there are many tourists here. But Roberto tells you where to find authentic Restaurants! All the famous sights of Rome are within Walking distance. We rented 4 bikes which we could leave in a court.
Stay: we never had to call Roberto for help, because there was a Folder answering all of our questions. Perfect Organisation, you can see Roberto is a pro.
Return: Roberto organized an Airport Transfer, again efficient and cheap.
Bottom line: we will ask Roberto for an appartment again if we go to Rome again. 100% recommendable. Thanx Roberto!