[Nyororin]

I can`t comment on schools, but Gifu is a pretty decent place.
It is a smaller city with fewer non-Japanese speakers (cutting down the chances you`ll have to avoid learning Japanese, which may seem silly now - but those chances end up being a huge roadblock for a lot of people.)
It is close to both a very large city and to the countryside - you can head down to Nagoya just as easily as you can head over to the mountains.
It is also convenient for going to other places in Japan, being kind of smack dab in the middle of the country.