I stayed at the Shinjuku Prince Hotel, about 5 minute walk from Shinjuku station. Convenient location and decent quality hotel with small rooms (which are the norm for that price in Tokyo). I booked it through the web site below for $112 including tax, service charge, and buffet breakfast. Proximity to the station meant easy access to/from the airport and subway around Tokyo. Plenty of restaurants (full service and fast food) and shopping in the area.

asiatravel.com

[This message has been edited by edsh (edited 05-23-2001).]