This apartment is PERFECTION! Central location, tasteful decor, breathtaking view, and welcoming host. I would highly recommend for anyone looking at this listing. DO NOT HESITATE! BOOK IT!
We arrived to Rome by train. The metro/subway was on strike the day we arrived so we took a taxi from Termini (35 Euros... I feel like that was a bit of a hustle but we just ate it). If you decide to take the metro, you take the Red Line and get off at Barberini Station. The apartment is about 8 minute walk from Barberini. You can also schedule directly with the host for a private car to pick you up from the airport. Take advantage of that rather than getting a taxi.
The interior of the apartment is very spacious and could probably accommodate up to 3-4 people comfortable. Alessia did a beautiful job with renovations while keeping the original ceiling and floors. Despite it being right at the Trevi Fountain, you cannot hear the crowds once the windows are closed. Pretty magical indeed.