My wife and are I going to be in Tokyo from April 18-22nd, and May 5-9th. We are staying at the B Akasaka, which seems to be pretty close to Akasaka station. Does anyone have any recommendations for places nearby for dinners that can be done as walk-ins? Our Japanese ability is minimal (i.e. I have assiduously devoted myself to a set of Michel Thomas cds). Any help is much appreciated, though I will suspect I will not have difficulty finding delicious things to eat.