We had a very pleasant stay at Maison Romana 3. We were checked in by Dorina, she was very accommodating as we were a bit late on our schedule. We never met Ana but our communication was smooth and I think she's a very nice person. We were also allowed to check out a bit later.
The apartment itself is brilliant: very well organized, clean, warm and cozy. True to the pictures on airbnb and even better. There's everything for cooking, good internet, and even a desk and a lamp if you need to do some work. It's located about 15 minutes on foot from Termini, also very close to the metro station on line A. Colosseum and forum are not that far either.
So, huge thanks to Ana and Dorina! It was a wonderful journey.