First hotel of Mandarin Oriental Hotel Group in Japan which is the worlds leading hotel chain with luxury hotels in major cities worldwide. Situated within the top floors of the state-of-the-art building, Nihonbashi Mitsui Tower, while its business centre and stately banquet and conference facilities reside within the adjacent Mitsui Main Building, a cultural heritage property. The oversized guestrooms range from 50sqm and spectacular views through the large floor-to ceiling windows in all guestrooms(except corner rooms). Breathtaking view of the dramatic cityscape and sky above from oversized glass windows at front reception. The Spa at Mandarin Oriental, Tokyo is a labyrinth of promise leading to private havens of relaxation. Silent corridors lead off to a selection of treatment rooms and private spa suites.