We are big Airbnb users and I've never left a bad review, so here goes...
Unfortunately what you see is not what you get with this listing. We were disappointed with a few things during our stay: check in did not go smoothly, the apartment is stuffy and smelly, and the place is dusty and dirty, and not reflective of the photos shown in this listing.
To get into more detail-- this listing is run by a company, not an individual host. Our train was delayed getting in and we were updating the company about this frequently via email, but I guess this wasn't communicated to the person meeting us at the apartment. He was very rude when we spoke with him over the phone and when we met him at the apartment. I think we really missed out on the special touch that an individual host provides.
The apartment itself is in an amazing location on a bustling street in the local's haven of Trastevere. However, it is pretty run down, and is extremely stuffy and smelly. The floor and furniture seemed to be covered with dust, and even the dishes in the kitchen were dirty.
Because the photos were so pleasant in the listing, we were pretty surprised and disappointed with this apartment, and wouldn't recommend it to other Airbnbers traveling to Rome.