A quick add - There has been some talk in the forum about Se.Sto on Arno. Dissapore visited and reviewed positively:
http://www.dissapore.com/ristoranti/...teo-lorenzini/
Google Translate will get you most of the way if you care to read the review. I gave it a glance in Italian and the translation isn't too bad. The main points certainly come across.