Information for groups and organizations

Otani Sanso has multiple banquet and meeting rooms to choose from, depending on your intention.
If you are considering holding a party, banquet, conference, general meeting, or dinner, please contact us to inquire.
Our sales team will be glad to assist you in creating wonderful memories.

7 strengths of Otani Sanso

point 01 A variety of guest rooms that can be selected according to your travel style

Choose from Japanese-style twin rooms suitable for two guests, spacious Japanese-style rooms, or guest rooms with open-air natural hot spring bathing.
Choose the ideal accommodation style for your purpose—workplace retreats, incentive tours, class reunions, and more.

point 02 Location surrounded by natural beauty and lush green mountains

Overlooking the clear Otozure River, surrounded by verdant green mountains. Spend wonderful moments at Otani Sanso, surrounded by the blessings of nature, and feel time flowing slowly by.

point 03 From family celebrations or retirement celebrations to workplace retreats
Banquet and conference halls to accommodate a wide range of uses

Otani Sanso has an extensive range of private banquet rooms of various sizes.
For groups of 10 or more, private banquet rooms are available for dinner functions.
Whether you are planning a family celebration trip, a reunion with friends, a workplace retreat, a surprise event for a loved one, or entertainment for a workplace trip, our sales team will be happy to assist you in bringing your vision to life.
Anniversaries at Otani Sanso
Otani Sanso is also available for general meetings and conferences. The large banquet hall can accommodate up to 320 people for dinners or large-scale meetings. Smaller meeting rooms are also available to suit any size and purpose.
We can also suggest entertainment, such as Iwami Kagura traditional music, band performances, and more.
*Equipment such as microphones, projectors, screens, etc. is available for rent. For more information, please contact our sales team.

point 04 Cuisine dedicated to local produce and traditions

point 05 11 different types of hot springs, both large and small

Bathing facilities for men and women are offered alternately in the 1st Floor's Seseragi-no-Yu (Mumuring Stream Bath) and the 2nd Floor's Komorebi-no-Yu (Dappled Light Bath). Enjoy open air baths of cypress and stone, a jacuzzi, sauna, and more: 11 different varieties of onsen baths.

point 06 We offer a great number of gifts and souvenirs from Yamaguchi Prefecture

Bring back a unique Yamaguchi souvenir for your colleagues who couldn't join the trip, or for your family to tell stories of your travels. We also offer Otani Sanso original souvenirs and gifts.

point 07 After Party Spaces

We have rooms with occupancies of up to 45 people, and we offer private rentals as well, so please speak with us about your needs. (Please inquire about prices)

Please feel free to contact us.

  • Inquiries for Guests Staying Today
    Otani Sanso Sales Promotion Group, Sales Team

    Tel +81-837-25-3300
    Reception Times:
    9:00 a.m. - 5:00 p.m. JST
  • Email Inquiries


The following is a pamphlet with information about Otani Sanso. Please feel free to download and use it.

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Make a smooth arrival on the day of your reservation

Approximately 3 hours by plane from Tokyo, approximately 2 hours and 30 minutes by car from Hiroshima, and about 2 hours and 10 minutes by car from Fukuoka.

See Otani Sanso access information

After your stay

From Otani Sanso, it's just about one hour to the National Treasure of Ruriko-ji Temple in Yamaguchi City, or Shimonoseki City, and about 40 minutes to the Akiyoshi Plateau, and Hagi City Castletown, a World Heritage Site.

See sightseeing locations near Otani Sanso