Originally Posted by
TRAVELSIG
Personally, I have stayed a few times at the FCO Hilton, and found it to be perfectly acceptable. The covered walkway from the hotel to the airport terminal takes 10 minutes absolutely max (and less if you are a fast walker). This would be the most convenient option. I think if you arrive at the terminal 75 minutes before departure time you will be fine in any case.
That would also be my choice. Although I find the Executive Lounge to be quite bland, the overall experience is definitely acceptable and you can reach the hotel, as mentioned, in less than 10mn.