Hotels around Hakata Station are most convenient, since it is best to travel to the site by trains leaving from Hakata (and not Tenjin, which is the main shopping and dining area).
A bit far from the station, but in a great shopping zone and dining (Canal City)
For those with big budgets, this is a fantastic hotel:
Another great hotel not too far from Hakata Station. Not too expensive and very nice.
* Perhaps the easiest way to find & book accommodation is to use a site such as http://www.jalan.net/.
* List of choices for information purposes only, the JALT CALL SIG does not assume responsibility for these hotels.