Believe the hype. We went for dinner with another couple on Dec. 23 (made the reservation a month in advance) and it was incredible. The agedashi tofu was one of the most amazing things I've ever tried. The broth that it's served in was so good, I had to ask our dinner companions to look away so I could drink it straight from the bowl! Yep, it's that good. Oh, and the husband is still raving about the duck.
Not cheap by any means (came to about $190 per couple for food+couple of pitchers of Asahi) but definitely absolutely positively worth it. Can't wait to go back!