nologic,

You do not need to take a train to go to the Narita Hilton since the hotel is very close to the airport. Narita is kind of boring, but if you go to Tokyo, go to Shinjuku....(by the way, rent "Lost in Translation" before going there...) The Tokyo Hilton was excellent and the area is awesome and is only one train away...If you want to stay in a more affordable place you can stay at the Crowne Plaza Hotel at Ikebukuro....Is near Nippori, Ueno and Shinjuku and the train station is next to the hotel. If you want to party hard and do not want to spend in hotel, go to Roppongi and try one of the latin clubs....You will love it...