The owners were super friendly and attentive. We got a lot of recommendations and other useful information both in advance and during the stay - you could definitely tell that they have done this a lot. The check-in was smooth with clear instructions and the apartment was easy to find. It is a short walk away from Roma Termini and all the most popular sightseeing destinations. We were able to see a lot in 5 days just by walking around.
The apartment is cozy and much like the pictures. The ceiling height on the balcony was quite low so we hit our heads a couple of times in the small space, which was not an issue but perhaps something to take note of when booking.
There was a lot of noise coming from the street outside from traffic and someone emptying the trash cans during the night, so we didn't sleep that well.
The lack of soundproofing on the windows was the reason we gave 4/5 stars. Otherwise the stay went very well and the apartment worked great for our 4-night stay in Rome.