Hottarakashi Onsen near Kofu in the Yamanashi Prefecture is a public 'onsen' or hot spring bath facility. The wonderful location of the onsen in the mountains north of the Kofu plain accounts for its immense popularity. Not only do you enjoy impressive panoramic views of the plain high up from the hot spring, but on clear days, you also get a good view of the Mount Fuji from this bath facility.
The Hottarakashi hot spring bath opens every day an hour before sunrise and remains open until well after dark. You'll find two separate baths at the hot spring charging separate admission fees. The one with the shorter hours is called Kocchi no Yu (lit. "Here Bath") and then there is the "Over There Bath" or Acchi no Yu located further east and somewhat deeper into the mountainside and thus offering better views of the surrounding valley and the mountains. Apart from the stunning views, you will also enjoy your hours at the waters of the bath as they feel smooth and silky on the skin thanks largely to its high alkali content.