I did my internship in a hot spring/hotel resort on the outside of Fukuoka City. I was so lucky enjoying the best of both worlds, relaxing countryside with unlimited hot spring baths (almost daily!!) and weekend parties in downtown Fukuoka. Too bad my three months internship was so quick over.
One thing I wanna stress out is, make sure to see Kyushu's countryside. It's beautiful and the locals are so friendly and eager making friends with you. If there wouldn't be the language barrier.
Anyway my Japanese got better after three months... Meiji bring me back to Kyushu!!!