rhouses
Sapporo. Yes
Obihiro. No
Kushiro. An even bigger no
I made the mistake of staying 5 nights in Kushiro. Absolutely nothing there. Lots of crumbling empty buildings that have been abandoned post early 90s. Obihiro. Again very little to see.
To be honest, the train journey is nothing special. For more scenic routes, you are better sticking to routes to Takayama in Gifu. Or maybe Takamatsu to Kochi on the island of Shikoku.