This is a lovely apartment! We spent a week in Italy and stayed at 3 different Airbnbs during our travels. This was by far the cleanest, nicest, and most modern. There's plenty of space for two couples or a family. The furniture is really lovely - these were the nicest, most comfortable beds of our trip - and the kitchen is big enough to prep and enjoy all your meals. This was also one of the only Airbnbs we could find that had an elevator in the building, which made getting up to the apartment so much easier.
Marta was great to communicate with and even helped us with the check-in process when we arrived much earlier than expected. Her flexibility and help saved us so much stress on a busy travel day.
The only drawback, which has been mentioned by many other reviewers, is the noisy street below the apartment. This is right across the street from Termini and the bedroom windows overlook the main road - so it's never quiet. If it were even a block off the main road or facing the other direction, it'd be much easier to sleep at night. It's also much further from Termini than it seems on the map. It's a solid 20min walk on a busy/crowded street. So it ended up not being that convenient for us, as any other place in Rome would have been only a 5-10min walk to a bus that could get us to Termini if need be. Personally, I prefer the neighborhoods closer to the Pantheon area to get a better feel for Rome and better Italian food. The restaurants around this apartment feel like any ol' downtown district, except the area didn't have many good spots for Italian food. The best food we had in this area was actually Indian and Pho - both of which were phenomenal!