We stayed at Marina's apartment for one week - and our time there was very enjoyable.
Our flight was delayed from Rome, however Marina's daughter was there to greet us and provide advice for our stay. There was also a folder of info including recommended places to eat - which we used and were never disappointed.
The apartment is as described - on the 1st level and an easy 3 flights of stairs to get to the front door. The apartment is in a good location, very central in all directions. The windows are double glazed so it is easy to block out the sounds from the street if you need.
The apartment had all that we needed for a 7 night stay.
Marina was always available for any query / advice. We met with her on our departure - and she kindly organised a taxi for us.