Maria's place was a nice stay, though for myself, a little too close to Termini Station. The park in front of the apartment seemed nice enough, but as a solo traveler, it actually felt a little sketchy. However, if you're looking to visit the Colosseum and the Ruins, the location was perfect for that! A very short walk to those sites :)
As for the apartment itself, the set up was more like a hostel with a private bedroom & a detached private bathroom. Both were good size, clean, comfortable & felt safe. My only complaint about the apartment was the smell in the hallway and bathroom was slightly nauseating of air freshener. I think Maria's place was a good value for what it was and as a host she was incredibly sweet & accommodating!