Understand that Hokkaido does ski in ski out better than Honshu. The purpose built Hokkaido resorts, Niseko, Rusutsu, Tomamu and Kiroro, were designed around slopeside hotels, so you can genuinely ski to your door. The Honshu classics like Hakuba and Nozawa Onsen are valley and village resorts where base area hotels get you close, but the terrain spreads across mountains and a short shuttle is often part of the day.
Match the resort to who is travelling. Families and first timers want Rusutsu or Tomamu, where one building holds the rooms, the food and the lift. Powder chasers willing to share the snow take Niseko for the lodging density, or Kiroro for the depth with fewer people. Anyone who wants culture over convenience picks Nozawa Onsen and accepts a slightly less seamless ski home.
Book the lodging before the lift pass, because the slopeside beds are the scarce resource and they sell out a season ahead in Japan. Confirm the property is on the snow rather than merely near it, since many hotels described as central still need a walk or a shuttle. Compare the slopeside scene elsewhere in our United States ski in ski out ranking and Canada ski in ski out guide, and read the wider trip logistics in the Japan destination guide.