For this airbnb you are really paying for the location rather than anything else. The place was on the small side, but it is in a convenient location to do some sightseeing in Rome. There are also some fantastic food places right in the square nearby (literally 20 meters away) with some of the best pastry and coffee we had on our trip.
Only downside is that the room got quite humid, but opening the windows helped with that. Wouldn't recommend for a long stay or anyone that has mobility issues, but it did the job for us for a four day exploration of Rome.