This is my third time in Rome. I was in Rome to catch a flight and not for the touristy activities. Rather than wait and jam all my travel together, I opted to come to Rome a few days early to relax and enjoy the food. Mario's place was in the perfect location for me (a few minutes walk from the station and food every direction just a few minutes away (BTW, as you walk outside the front door of Mario's building, look to your right - and across the street- there is a great pizza restaurant that sells pizza by the slice. I ended up snacking there quite a few times. They close at 8pm.)
I did not meet Mario but Rosalba met me and she was great. The bed was comfortable and I slept great everynight. The room I rented had a small en-suite bathroom but it was just what I wanted. The room was exactly as described and photographed.