A wide range of services are arranged for occupieres of MITSUI & CO. Building and Otemachi One Tower
for TENANT (limited site to occpuiers)
This is an information site for Otemachi One tenants.
Please contact your person in charge of your office in order to get login ID and password.
Air Conditioning System
For air conditioning, please use this system.
Since the air conditioning is centrally controlled by the Security Office, the person who has the authority can access this system.
Visitor Entry System
・QR codes and reception numbers are issued once tenants register guest information in the visitor reservation system.
Convenience facilities for OTEMACHI ONE office workers
We offer premium membership facilities for OTEMACHI ONE office workers to spend their days with vigor and vitality.
* Each facility is located inside the security gate of Otemachi One Tower.
* Those who works in tHe Mitsui & Co. Building may come to the 5th floor via the mezzanine, the 2nd floor in Otemachi One Tower.