Hilton Narita is a Nice Place
I've stayed at the Hilton Narita a few times as an HHonors Gold. I've also stayed at other places in the Narita area and consider this my favorite.
As a Gold, they've always upgraded my room... and they've always offered complimentary full breakfast buffet. The free shuttle service to/from the airport and train station also make visiting the area easy and inexpensive.