The apartment is very well situated, close to Roma Trastevere train station, and two minutes from the tram, which is great for getting places. It is also walking distance from Trastevere, and close to nice parks such as Villa Sciarra and Villa Doria Pamphili. It has a small but fully equipped kitchen, and the bathtub was lovely! Although it was too hot to sit outside, the balcony was a cute and absolutely a plus.
However, the communication with the host was not the best. Especially checking in was a bit stressful, as I struggled to find the apartment and Francesca did not seem very understanding of this, and I had the impression that Francesca did not trust me, and wanted to drop by the apartment to "check", when I did not immediately answer her messages during the stay. The apartment also heats up very quickly, especially this room, as it is facing the sun most of the day, and the floors are wooden, not marble, which would be good for winter, but not great for summer. The bed is not a proper bed, it's a sofa-bed, and the mattress is not particularly comfortable. It is also extremely squeaky (couples, beware) , and it is impossible to get out of bed without waking up the other person.
In total, the experience was allover good, and I would reccommend it for a short stay, but with some drawbacks that I think visitors should be aware of.