where the Grand Hyatt Hotel Roppongi is.
It is located in the Roppongi T-Cube building above Roppongi-itchome station which is down the hill from Mr Mori's gargantuan development in Roppongi Hills. The T-Cube building also houses Samsung and Fuji-Xerox offices, the main tenants.
I looked at a few apartments in Roppongi Hills but the bus-loads of Japanese tourists coming from the suburbs just to gawp at this 21st century agora, put me off the idea. I would have felt like a koi carp at an aquarium

The Conran interior decor did not endear me either. Cream padded walls and black curtains; felt like Bedlam Hospital.
Regards,
MTF