None, or very little night life. Far from train station, in/out to nearby city is by bus, forgot already if hourly or twice hourly. Not so much food variety, konbini is small. Other than that, okay la. Lots of onsen/sento, some need schedule to go, others just open, no need to pay.

I just been snowboarding a bit only, mainly at Hokkaido, so cannot give any more suggestion. You already go to Niseko, that one is the top spot already.