Chiara's place is located in San Lorenzo neighbourhood. Some people will tell you it's not the best area due to noise and the number of students accommodations nearby, however I found it really great, many restaurants and cool spots to hang out, genuine vibe, and not even that noisy. The apartment is also about 10-15 mins walk to the Sapienza University.
As for the accommodation, it's a spacious double room in an apartment with two other rooms: one that can be also rented (in my case there was a couple in it), and Chiara's mom in the other one. There is only one bathroom (shared), so you might have to wait a bit if there are 4 or 5 people overall in the house, but it's feasible. The room was clean and tidied up, the overall place could use a bit of deeper cleaning as it's an old apartment and given the amount of people passing through it can unfortunately dirt quite easily.
Overall experience was nice and without any major issue. Chiara is very responsive to message and her mother super sweet. If you're on a budget and don't mind shared spaces, this is definitely a good option.