<As for a login modification for MGH members>
We will inform you of the modification of your login ID in order to improve conveniences for all MGH members.
The login system has been changed since March 2017, please login with your registered e-mail address and password.
If you are unable to login after the login system change, we are sorry to trouble you,
but please feel free to contact us at the below e-mail address.
We intend to reply as soon as possible to your e-mail.
MGH Guest Center
The Celestinehotels / Mitsui Garden Hotels
Mail : firstname.lastname@example.org
Guest Center TEL : (Mobile/IP Phone) +81-3-3548-0328 (Charge)
(Landline for a domestic area only) 0120-313146 (Free of Charge)
Weekdays only : 10:00-17:00 (Japan Time)
Guest Center is closed on Saturdays, Sundays and National Holidays. points exchange shipping is also closed.