Mario is a good host, although we've never seen him, he was always in touch with us and give us all the info we needed. Mario had sent us the instructions before we set out, so the check in was easy and room is clean with a comfortable bed. It is very central, 2 minutes to the metro station, most of the tourist sites are in walking distance. And the breakfast place"NATA" is also very nice, the staff is very friendly and you can store your luggages there, very convenient! 5 stars!