I had a great stay at Elisabetta’s place for a 5 days over the New Years. The host was wonderful, she even left us a fruitcake and sparkling wine for the occasion! The place was clean and everything was as described. Just watch your head, the ceiling is quite low in some places.
The location is a 10 minute walk to the Battistini metro station and then a 20 minute train ride to Termini (central) station. We found the metro to be much more reliable than the buses in this area, but that might have been because of New Years.
One thing to note is the WiFi here runs off a cellular WiFi hotspot, meaning there is a data limit of a few gigabytes. We asked Elisabetta to increase the limit to stream a movie and she promptly had it increased.
I would recommend this place to those looking for budget accommodation in Rome.