This place is beautiful and modern, and I really felt at home. Maria is so charming and a joy to be around. She gave me extremely detailed instructions about using the nearby trains (it's not at all difficult - she was just being thorough), and left out a nice spread of breakfast and coffee for me so I could have something before I could get to a market the next day.
I kind of stumbled into this habit because it was so hot during the summer, but I'd get up really early and head to the train station at 6:00am or so while it was still 70F, because by noon it was flirting with 100 and I'd be just about ready to head back anyway. It was so interesting! You get to see the totally regular Roman morning commute, and when you get to the city you will be the only tourist around. I walked around the Colosseum at 8 am or so and I was literally the only person there, it was just me and two soldiers guarding it. I also got to view the Forum ruins in morning light without anyone else there. You might think that Maria's place being a little out of town is a drawback, but if you work with it it's honestly even better. Stick to the trains, use google maps's public transit directions if you're worried.
Wifi was excellent, as was the bed, the supermarket is 5 minutes' walk away, and you've got Maria!