Asahidake Ropeway is in a national park. Since it's not part of a resort there are no ski patrol or rescue teams. Skiers are responsible for their own safety.
Hakuginso is a town-operated facility at the Mount Sandanyama trailhead. Meals are not provided. But there is a fully equipped communal kitchen. It has hot springs and nearby there's also the wonderful Fukiage open-air hot spring.
Asahikawa Ramen Village
Asahikawa is famous for ramen. Drop by Asahikawa Ramen Village, which has 8 popular restaurants, to try out the regional specialty.
To reach Mount Asahidake and Sandanyama, fly from Haneda Airport to Asahikawa Airport. A direct bus takes you to Asahidake Ropeway in 50 minutes. To Hakuginso, it's another hour by bus.