I have eaten here a few times and it is an authentic Japanese restaurant - much on the Original country style - I have been to similar places in Tokyo and Kyoto. Understated and well presented! Food is what you would expect - and fish is supremely fresh - very popular place and near to full most nights.
I enjoy it a lot as you can tell.
Donzoko is a charming and cheerful restaurant situated in a quiet ground floor building that serves a variety of Japanese dishes. A takeaway menu is also available.