Good value, some small improvements would take this from a 4/5 to a 5/5. The location: excellent, easy 20-30 minute walk along the Tiber to central Rome's attractions, however the neighbourhood is very authentic with some of the best restaurants we ate at during our stay, (Flambar, Osseteria Mamma Mia, Pico Gelato). Check in was easy, air conditioning worked well, the unit was the perfect size for our group of 6. (3 adults, 3 children). Suggestions for our host that would make a big difference: leaving enough cleaning products, a broom, an ironing board, addressing some mold in the shower.
Other than that, the gated entryway to the building is very tricky to open from the outside, however it is fairly easy to get the key in through the spaces in the door and unlock it from the inside. Not the fault of our host - keys and locks in Italy seem to be a little screwy everywhere we went.