Il Calandrino Tokyo

Expensive, high class but also relatively casual restaurant in the Shin Marunouchi building. Generally can book up lunch relatively easily but this is more a reflection of it not being cheap. Howevr it is pretty good for a special occasion and can't miss for still relatively formal but not over the top business entertaining.

Tel: 03 5918 6551
http://www.ilcalandrino.jp/en/

Oto Oto

Oto Oto is a decently priced and stylish Japanese restaurant in Ebis Glass Square tucked away at the end of the corridor. Good enough to take work people it is also good for lunch and fairly children friendly.

Tel 03 5791 7666.

But the main thing is it is part of a pretty decent luxury chain. The URL for the group is...
http://www.ramla.net/luxury_restaurant/