Overall, we had a very good experience staying at Francesca's place...
The ride Francesca arranged from the airport was on time and got us right to the doorstep while navigating a van down some very narrow & crowded streets. Francesca was accommodating to our early flight arrival and let us check in and leave our belongings despite the apartment not having been cleaned yet from the previous tenants. She wasn't there to greet us, but her friend Raoni let us in and showed us how the locks work, internet login, etc.
The apartment is very large, even by American standards. It has a quirky layout with multiple steps up or down into various rooms. I definitely missed a step or two, so any older travelers or small children should be wary. As other reviews mentioned, the place is on a very crowded, busy street in the heart of the Trastevere night life, so be prepared for some rowdiness. However the bedroom is located near the back of the apartment and we didn't hear a peep from there. The terrace, located off the back of the bedroom, was a nice private space to enjoy a morning coffee or evening drink. The AC was clutch and kept the whole apartment and bedroom cool despite temperatures in the 90s all week. And having laundry was also a plus, given we could pack lighter and didn't have to transport a bunch of dirty laundry back with us.
So happy we found this listing, as I imagine it's difficult to get an apartment in Roma at the height of the travel season with this combination of size, amenities, and location. If you want a place in the heart of it all, this is your spot.