My partner and I had an amazing time at Barbara's apartment.
The location is very central and walking distance to everything. Every tour guide we had mentioned how great our location was so that must be good! We did not take public transport or a taxi at all, except for when we arrived and left Rome. If you want luxury brands its just a short walk, next to the Spanish steps. There are plenty of restaurants and shopping just down stairs from the apartment as well. Use the "explore" function on the google maps app as a guide to all the best places. If you are not technologically savy Barbara is so helpful and friendly she will definitely recommend some great places for you. Even though the apartment is centrally located it wasnt loud at night. Some things that some people may not like is the small shower and the lift is a tight squeeze for two people. These issues were very minor for us and didnt negatively impact our stay.
Barbara was so kind to offer to book a taxi for us for when we were leaving Rome. She also occasionally checked in to see if everything was ok.
I have stayed in a few Airbnbs before and this was one of my best experiences