As a frequent Airbnb traveller, this is the first bad review I've ever written - and I'm genuinely surprised about all the excellent reviews for this place.
With the exception of the great location, in a quiet street in the heart of the charming Trastevere, there is nothing to like about this apartment and I would certainly not recommend it to anyone. The apartment is very small and extremely damp - nothing dries and the musty smell is impossible to get rid of. With only one very small window, there is no natural light either. Despite assurances to the contrary, there is NO WIFI in this apartment.
We absolutely loved Rome, and it won't be long before we go there again - but you would have to pay me a lot of money to stay in Antonio and Valentina's place again.