Also that the Hilton is overpriced, a bit rundown, and offers only “passable” food in the restaurant
As I mentioned earlier, my room at the Airport Hilton was immaculate, and I suspect that the wing I was on, if not the entire floor, had been refreshed recently. My traveling companions were in a separate wing on the same floor, and had no complaints - and they had dinner in the restaurant and survived.
There have also been reports of long lines checking in - we had virtually no wait. And if you install the Hilton Honors app, you can check in virtually and use your phone as your room key.
I took a long 10 minute walk over to the terminals to scope out where we would check in the next morning, and found a quick dinner landside in Terminal 3 - there is an outpost of Eataly and an Autogrill Cafe up one level from departures.
But this is not to totally defend the Hilton - having done it, I would also opt for staying in Fiumicino if faced with another early morning departure.