Not many mentioned here either, alas. I left the Sofitel too late to find anything during my first (and last) evening in Nagoya.

studentbecomesteacher has a couple of good suggestions in this thread
link goes to this merged thread

Your question has been asked a few times in various guises. Unfortunately, hardly anyone ever has much to say on the subject.

I know someone very well who spent the good part of a year working at a Nagoyan Spanish restaurant - the place used Japanese rice (a big no-no) and wasn't at all recommended.

We didn't ask for recommendations from our hotel (we probably should have) but the Front Desk staff at the Sofitel were memorably outstanding (and in Japan it takes a lot to stand out!). If you find yourself staying there don't hesitate to ask.