Unlike us we stumbled upon this little restaurant some 150 metres from our hotel in a side street. (we normally go to tripadvisor first) It was the find of our holiday so far! A fantastic menu that wanted us ordering about 6 courses instead of 3, quality food with ample portions and superb presentation, not only that but with certain courses a little adventure in the serving.......eg I ordered a whole baked fish (can highly recommend) and the bought it out on a trolley and carved and plated in front of me. Other meals in the restaurant were similar with their own twist. As expected in this quality restaurant it is also about the wine with an extensive list to peruse and to be prepared & poured in the appropriate manner.
In summary, certainly come to Pisa for the attractions but do yourself a favour and treat yourself to this great little restaurant. PS... We didn't book, I think we were lucky, within 15 minuets of sitting down it was full.