We arrived in Rome (3 adults, 2 children) and were pleased with the location of the apartment, as it is right off Piazza Venezia and about a 5 minute walk to the Trevi Fountain. Here are the pros and cons of the apartment from our experience staying for 5 nights:
Pros:
Location, location, location - great spot close to the bus stops that take you to the major sights, also very walkable to many if you don't have small children
Size - the space is quite large with 2 decent sized bedrooms and a nice living room/kitchen/dining combination room
Elevator - The apartment is on the top (4th) floor and there is an elevator to help with luggage, etc. Unfortunately, during our stay, the elevator only would go to the floor below us. We were told it would be fixed during our stay but it never was - somehow I got the feeling that this was not a one-time occurrence and that fixing it was not even a slight priority.
Cons:
Hot water - There are 2 hot water heaters in the apartment, one supplying the smaller bathroom and the other supplying hot water to the master bathroom. Unfortunately, we never experienced hot or even warm water in the master bathroom, even though the agency sent a technician out 2 times to "fix" it. We all had to shower in the hallway bathroom, with water that was never consistently warm, but that actually cycled from scalding hot to freezing cold.
Kitchen - After we advised that there was also no hot water in the kitchen, we were told that there is no pipe to supply hot water to the kitchen. Unfortunately there was also no dish washer, so I'm not sure how clean any of the plates, utensils, pans, cups, glasses, etc actually get when they are washed with cold water and soap. This to me is an issue that needs to be solved quickly.
Noise - There is an Irish pub/disco across the street from the apartment, that the master bedroom looks down over. The party gets started close to 1:30 am every night, even weekdays, with very loud, heavy base music until about 4:30-5:00 am, after which time the morning rush hour traffic sets in. So the apartment is quite noisy most of the time.
Agency Run - The apartment is not managed by the owner, but by an agency who runs several apartments. This could be a pro or con - depends on your personal views of what Airbnb should be and if you prefer to rent directly from the owner or not.
For the price, location and size, the apartment was must more comfortable than being in a hotel room, especially with 2 children, but I think we would do a bit more searching for other apartment options before immediately booking this one again.