Flaviana is an excellent host, and the studio exceeded our expectations. We highly recommend it to those who wish to spend time in a quieter area of Rome (the city center is highly accessible by buses, so the location wasn't a problem for us). It's also very close to the Vatican, which was a lovely bonus.
The studio was more spacious than we expected from the pictures, and we liked the choice of decor. Everything was very clean, and whenever we had any questions or requests Flaviana was immediately available and very helpful. We appreciated her willingness to dedicate herself to ensure our stay was as comfortable as could be and cater to our whims (extra blankets etc). Even silly things like difficulties operating the coffee maker were immediately answered with a helpful video.
We very much appreciated the self check in and check out, so we didn't have to worry about the timing of our arrival and departure.
The bed was very comfortable, neither too soft nor too hard, which was a blessing as both of us have back problems.
Another great thing to know, that Flaviana doesn't mention in her welcome video, is that apart from the few steps at the front of the building, there are TWO separate elevators (one from the entrance to the ground floor, the second from the ground floor to the apartment). This helped a lot, as we came with several heavy suitcases.
Also note that the description of the studio, given by Flaviana, is very accurate. For example, the kitchenette area has only the amenities listed on this site - nothing more nothing less. As long as you know that in advance, and don't plan on any cooking beyond microwaving, then you are all good.
All in all - an excellent price for an excellent apartment with a very pleasant host. We highly recommend it!