Onsen literally means 'hot spring', but the term generally refers to a communal bathing facility that features showers, a different types of hot spring baths, and often a sauna. Private Onsen feature a smaller bathing area to be used by just one party at a time. When it comes to Niseko holidays, an Onsen will be your best bet for après-ski relaxation. Luckily you will find on the ground floor of Skye Niseko.