For late March, I'm thinking of either Niseko Village (Hilton) or Tomamu (Hoshino Tomamu Tower) for 1 day of skiing on a weekday.

Niseko gets the edge in terms of accommodation, because it's Hilton (I'm Diamond) and Hoshino Tomamu Tower has horrible rakuten ratings (I can't afford the other two hotels at the resort).

But Tomamu is way easier to get to from CTS and is also more convenient to travel to my next destination than Niseko. I'm not driving this time. If Tomamu, I can take the train. If Niseko, bus but I'd have to wait a long time for it after landing at CTS.

I'm looking for the easiest possible slope access from the hotel (I want the hotel right on the slope) and one with facilities that make it easy to ski after check-out. Actually, Hilton may let me extend check-out till 4pm for free as they have done for me during summer, although they may not do that during ski seasons.

Terrain and quality of snow are not that important, but obviously it's important that there is a high chance of there being enough snow for the place to stay open in late March. I want family-friendly atmosphere and professional staff such as what I experienced at NASPA.