The apartment is quite nice—large, clean, air conditioned, and comfortable. It has all the amenities one needs: kitchenware, ironing board and iron, WiFi, etc. Daniela and her housekeeper, Giuliana, were very responsive and helpful. There is easy marketing nearby, an ATM, small coffee bars, some shops, and so forth. Daniela has compiled a helpful notebook providing this basic information and addresses. So, in terms of a living space, the apartment is a great value.
The problem is location. It’s quite difficult to get to the center of the city. Several bus lines do run there, but several times I had to wait half an hour for a bus, and then the ride may be 15-20 stops. So getting to a central area in Rome can take 30 minutes or more. There is a very effective Uber-like app for taxis in Rome; then the ride to a more central, commonly frequented area may be around 20 minutes (depending on traffic). I found that I was spending more on taxis than I would have liked.
So: the apartment itself is very pleasant, and you’re living in an authentic, sort of working class Roman neighborhood. Those are pluses. The downside (for me) was being far from the neighborhoods I needed to be in. Of course, this is largely my own fault, for not having researched the transportation situation sufficiently. I would definitely recommend the apartment and Daniela as a host, if the Sapienza area is appropriate for you.