Just opened in June, 2020! Otemachi Mitsui Conference has a great location; directly connected to Otemachi Station.
Our facility is equipped to handle training sessions, conferences and seminars gathering up to 300 people.
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8 Various-Sized Rooms
for a Variety of Events

At one of the biggest business districts in Japan, you can host extensive events including meetings, training sessions, seminars and orientations. After the event, you’ll be able to have a social gathering by using our affiliated catering services. The room size: from 25㎡ to 289㎡ maximum. Equipped with video and audio system. Free Wi-Fi available.

Facility Details

Great Access; Directly Connected to the Station

Otemachi, easy to access from multiple areas, is a perfect place for events gathering attendees from around the country. Subway is attached to the building, so you won’t get wet with rain to get here. Besides, it's easy to move inside our facility between the 3rd floor and the 4th floor.


Providing Support by Our Coordinators

Our on-site coordinators provide support from booking to the day of your event. We would suggest the best plan for your events. Please use our facility without worry, for we are here to settle problems on the day.

Price Flow User Policy ( PDF ) User Guide ( PDF )

Contact & Booking

If you have any questions, please feel free to contact us by phone or through an inquiry form below.

Hours: Weekdays 9 a.m. – 5 p.m. +81-3-5220-6906 Inquiry Form