Absolutely adored my time here. Close enough to the city center that you're a 20-30 minute walk or a 10 min bus ride away, but far enough away that it's quiet and you get a real feel for local living. Tons of great food options in the area, and Trastevere is right across the river. Felt super safe as a solo traveller here.
Stayed during the great heat wave of 2022, and it was definitely manageable. Open shutters at night and in the morning and close during the day. There's a fan to use as well, and the cross breeze is nice.
It overlooks the Testaccio square, so there's some noise at night, but the bedroom faces the interior courtyard, so sleeping is not a problem.
Only flag is wifi is a little slow if you're working or trying to take video calls. If you turn off your video, there's absolutely no problem, but was a touch slower than I would have preferred. But nothing that would deter me from staying again!