In a word, "Wow!" An amazing location with a fantastic view of the nearby Mediterranean and the lively square below. Walking distance to the beach, with a ton of restaurants and shops right outside the door. Less than a 10 minute walk to the train station, where you can catch a train into the heart of Rome or to Ostia Antica (which I highly recommend).
A few things to note-
There is not air conditioning, which honestly you dont need because you can open up the windows and let the Mediterranean breeze in and its PERFECT. But....it does also let in mosquitoes, which were plentiful when we were there in September, and also lets in noise from the square below which was lively every night we were there until around 2 am. None of this was enough to diminish our stay at all, but something to consider for those more sensitive to noise and bites.