We had a very pleasant stay at Maria's Airbnb! The appartement is very spacious, very clean and has everything you need.
Maria is really quick in answering al your questions, which is great. She is a very friendly person!
In other reviews of the appartment people talk about the smoking smell and a smell in the bathroom. Yes, you can smell that there has been smoked in the appartment (faint), but with the windows open and Maria has a lot of air freshners, it did not bother us much. The smell in the bathroom has probably someting to do with the pipes (it is an older building), you smell it sometimes, but it is not like the smell is there constantly and the bahtroom is very very clean, so Maria cannot do much about it. I would not let it stop me from renting the appartement though!
The bedroom is spacious with closet space and has a very comfortable bed, good pillows. The sofa's in the living room are also very comfortable, so perfect to relax after a long day of walking! We were there in October with a week of 26 degrees (with some clouds) and the appartment stayed cool.
The appartement is in a pleasant neighborhood, supermarkets are nearby, the bus/tram stops almost in front of the house that can bring you quick in the city center. We used the electrical steps from Lime to get around Rome, which is a very fun and easy way to do a lot of sightseeing. Near the appartement is a really great restaurant, called TIZ Cucina e Sofa (5-10 min walk). I would recommend to use the transfer option from the airport to the house. Maria can arrange this for you and it costs 50 euros (one way). It sound a lot, but it is cheaper then getting yourself a cab from the airport.
I would definitely stay here again if I would visit Rome again.