If you want a piece of history, this place is for you. Inside the walls of the castle, you can really feel the old town. The location from that perspective is amazing, and right next to Ostia Antica. We found that the local village otherwise didn't have much to offer, but maybe it is different in summer.
Accommodation is compact, but that reflects nature of the old building. Be aware that the third bedroom is actually the living area, which was fine for us but not quite what we had expected.