Where is a fantastic and cheap sushi & sashimi place in Tokyo?

Question:

The one that serves exotic and rare sea foods. Please don't suggest Tsukiji, we've been there already.

Our budget is around 150 to 200 Euros for 3 people. Is that enough?

Also please include directions on how to get there by train from Keio Plaza Hotel.

I choose best answer.

Answer:

I guess it is difficult to have GOOD sushi with cheaper than 10,000 yen.
Still there are some cheaper sushi restaurants in Tokyo.
They are not high quality restaurants, but are better than "kaiten" sushi.

Sushi-Zanmai Okunoin / すしざんまい 奥の院
http://r.gnavi.co.jp/a400402/lang/en/

Itamae Sushi Roppongi branch / 板前寿司 六本木店
http://r.tabelog.com/tokyo/A1307/A130701… (Japanese)
http://r.gnavi.co.jp/p761800/lang/en/ (Akasaka Branch)

And I found this page. This migh be a help for you.
http://www.facebook.com/topic.php?uid=49…