This is a well-appointed, elegant apartment, just as portrayed on AirBnB. The location is perfect but we suggest you do your homework on the neighbourhood before booking; given the apartment's location right on Piazza S Spirito, it can quite noisy at night, and into the early morning, so, it may not work if you have young children, for example. It wasn't a problem for us - we had a great time. Having stayed in the area on previous occasions, we knew what to expect.
We didn't get to meet Maria Teresa (she was in Rome), but her small army of helpers was excellent, in particular Ludovica and Laura. They were available at all times.