The Rhiga Royal is now a Hilton I believe and is quite nice. I have used the Radisson several times and have no complaints - It is where NW puts their crews - It is a bit further from the airport (15 min-20 min drive) but the courtesy vehicle seems to run frequently enough. I have also used the Nikko Narita, not to be confused with the Nikko Winds Narita. If you use the Nikko , ask for a room in the new tower/section. The only hotel that I have used at Narita that I did not like was the ANA - very small room , little A/C - What airline are arriving/departing on ? JAL has a check-in at the Nikko and ANA has one at the ANA. Hope this is helpful