Onsen resorts around Fukuoka

I am going to be traveling on a tight schedule in a few weeks and was wondering if there were any nice onsen resorts, where they had a nice option of springs, meals, etc. that weren't too far from Fukuoka. Beppu and the like would be a little bit out of the question as my schedule is incredibly tight. Just wondering if anyone had any suggestions. Thanks!

An overnight stay at a ryokan is necessary to fully appreciate onsen. My top recommendation is Kurokawa, which is has a direct bus connection from Fukuoka (2.5 hours, 3000 yen one way):
http://www.japan-guide.com/e/e4575.html

If time is tight and you can't go far, you might try the Futsukaichi area - while not the most famous, it is one of the oldest, going back over 1300 years. There is some info at:
http://www.crossroadfukuoka.jp/en/event/?mode=detail&isSpot=1&id=40000...
The area is also very close to Dazaifu, which has a very famous shrine and historical area.
There are more choices at:
http://yokanavi.com/eg/landmark/keyword/90
If you want to stay a night, then one of the better nearby places is Kyukamura, on Shikanoshima, with a wonderful ocean view.
See:
http://www.qkamura.or.jp/en/shikano/
Shikanoshima also has many interesting historic places and good hiking.

There is also a lot of good Fukuoka info on:
http://www.tinyurl.com/see-fukuoka