Whats a good city to stay in Japan for 3 months?

Question:

I'm going to Japan for 3 months on student exchange in November to February to experience the culture and learn the language and I'm allowed to list preferences for which city or prefecture i would like to stay in. Considering the radiation crisis and everything what do you think the best cities would be for a 16 year old exchange student?

Answer:

In or near Fukuoka. It's clean, it is by the ocean, there is a lot to do. It is also the largest city in
Kyushu, the southernmost of the four main islands of Japan. It has great seafood, the people are
nice, the weather is good. It's not too small, it's not too big. It's far from where the problems are.
Most festivals are held in warmer months, but Fukuoka has a festival in Janaury, Tokouka Ebisu.