Natural Onsen Hot SpringSesekka


  • 2023.1/1・2
  • 2023.4/29~5/7
  • 2023.6/3~10/9
  • 2023.12/23~31


  • 2023.1/3~4/28
  • 2023.5/8~6/2
  • 2023.10/10~12/22


100% Natural Hot Spring Surrounded by Deep Forest

Find rest and relaxation at Sesekka, the Nidom’s Onsen & Sauna. Our 100% natural hot spring water filters through the sediment of local volcanoes including Mt. Shikotsu and Mt. Tarumae.
The word sesekka means “warming” in the Ainu language.

  • Main Building 1st Floor Basement
  • Operating Hours  3:00 pm – 9:30 pm  
  • Only guest (Free of charge)

※*Operating hours are subject to seasonal changes.


The mildly alkaline hot spring water promotes beauty, relaxation, and good blood circulation. Sesekka is the perfect place to relax after a round of golf.
We also recommend Sesekka to wedding guests staying at the Nidom.
Sesekka also features an authentic Finnish sauna, where guests can relax, let go of stress, and refresh both body and mind.

Water Quality Sodium chloride strong saline spring (mildly alkaline hypertonic hot spring)
Benefits Our hot spring is beneficial for a range of issues, including neuralgia, muscle and joint pain, frozen shoulder, fatigue, chronic digestive illness, poor circulation, chronic skin ailments, and more.
  • 美肌効果の高い天然温泉

    Our natural hot spring water promotes beautiful skin.

  • フィンランドスタイルのサウナ

    Relax in our authentic Finnish sauna.