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News

2024.12.03
One Harmony Office will be closed from December 28, 2024 to January 5, 2025 for the year-end and New Year holidays. We apologize in advance for any inconvenience.
2024.11.01
Extension of One Harmony Points Expiration Date
2023.04.01
New digital voucher for one-category guestroom upgrades for Loyal & Exclusive Members (“My Voucher”) is now provided. Sign in is required to display the digital voucher. Please click here for display.

Special Offers

Stay Award Promotion!

We are offering a limited-time Stay Award promotion. Enjoy an upgraded stay at participating hotels using fewer One Harmony points than usual.
Click here for details

Okura Nikko Hotels- Early Bird Specials

Enjoy our early bird specials and stay with us at a special rate. Perfect for your next trip!
Click here for details

Contact Us

One Harmony Office

+81-3-6402-3388
Inquiry Form
F. A. Q.
9:30-17:30 JST
(Closed Saturdays, Sundays and Holidays)