We had the pricier omakase lunch menu. The chef which served us spoke only a little English but made great effort in telling us what every pieces were (and where the ingredients are from). Pacing was great as we were never without something in front of us for too long (well, except for once when he was occupied making a whole plate of sushi for three guests in the room), yet the meal never felt rushed.
The small crab which the chef has picked all the edible bits out, cleaned the shell and placed it all back in was particularly good. So were the uni & white prawns. And the Anko (?) fish liver. Just see the photos.
Service was great - my tea was often changed without my noticing, and despite our not knowing a word in Japanese, all the staff were courteous and nice.
The only thing that I would pick on is the environment. The marble stone walls kind of emphasized the basement feel of the restaurant, and made it slightly noisy due to stronger reverberation. I also liked the more intimate setting of Sushi Iwa in Ginza than here. Nonetheless, we had a very enjoyable lunch here.
Note: the restaurant have less than 20 seats. We called 2 months ahead (not speaking much Japanese) to book.