I’m sharing this in the hope that doing so will help more people see it. Also, I have one suggestion – the Kumamoto Prefectural Gym (Kenritsu Sogo Taiikukan):

http://www.kspa.or.jp/sougou_taiku_charge.html

You can lift weights for two hours for 380 yen. I’ve gone swimming there, but not tried lifting weights there. Because it’s fairly reasonably priced, it tends to be a little crowned but I think that both in terms of location and cost it’s probably a good choice for you.

Any other ideas?

– KIrk