Massages
Facials
Signature Treatments
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Dinner Plain Onsen & Spa is open from 12pm to 8pm 7 days per week for the 2026 Winter Season. We look forward to welcoming you all!
Please be aware this is a mixed gender Onsen and we require all users to bring appropriate swimwear. Thank you!
Please be aware this is a mixed gender Onsen and we require all users to bring appropriate swimwear. Thank you!
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