I’ve checked artist residency near hot spring (Onsen) in Japan. If you are an artist and want to make artworks in Japan and enjoy hot spring at one time, these are the best places to stay.
(Unfortunately some of these websites are written only in Japanese and don’t have English version…)
Dogoonsenart http://www.dogoonsenart.com/ Ehime, well known art event held in Dogo Onsen (hot spring)
Arafudo Art Annual http://arafudo.net/en/ Fukushima, art event held in Sep – Oct in Arafudo Onsen
Tottorigeiju festival http://tottorigeiju.com/ Tottori, held in some areas include hot spring town during Sep – Nov.
Kinosaki International Arts Center http://kiac.jp/en/ Hyogo, residency for performing arts located at a hot spring town.
Beppu Project http://www.beppuproject.com/ Ohita, art project in Beppu Onsen. There’s an annual apartment rent for artists for only 10,000JPN per month, they call for application only in Feb.
Art Bridge 1301 http://1301.artmimasaka.jp/index.html Okayama, Art event held in July – Dec include hot spring area.
Fuwarinomori Artist Residency http://www.fuwarinomoriart.jp/ Chiba, new residency near Narita airport.
Noboribetsu artist in residence https://www.facebook.com/pages/%E7%99%BB%E5%88%A5-%E3%82%A2%E3%83%BC%E3%83%86%E3%82%A3%E3%82%B9%E3%83%88-%E3%82%A4%E3%83%B3-%E3%83%AC%E3%82%B8%E3%83%87%E3%83%B3%E3%82%B9/583278781711356?fref=ts Hokkaido, the detail is not sure, but artist stay at Noboribetsu Onsen.