notice
Notice of System Maintenance Due to Revisions to the One Harmony Membership Program
Due to the revamp of the One Harmony membership program, member services
will be temporarily suspended during the following period.
■Maintenance Period
From 12:00 a.m. (JST), March 23, 2026 to 10:00 a.m. (JST), April 1, 2026
(scheduled)
Services will resume as soon as maintenance is completed.
■Services Unavailable During Maintenance
During the maintenance period, sign-in will be suspended. As a result, the following
services will not be available:
• New member registration
• Member-rate reservations and reservation changes
• Point redemption
Points for eligible stays will continue to be credited as usual.
■Reservations During the Maintenance Period
Member-rate reservations will not be available online during the system
maintenance period.
Even if you make a reservation at the regular rate during the system maintenance
period, we will apply the member rate at check-in, provided that you inform us of
your membership status.
Please note that this does not apply to plans that do not offer member rates or to
plans that have been prepaid. Thank you for your understanding.
You can check or cancel existing reservations using your email address and
reservation number.
*Please note that during the maintenance period, the One Harmony Office and individual
hotels will also be unable to assist with the above services.