Bistecca alla Fiorentina in Florence
I would suggest going to the upper right-hand corner of this page and doing searches for both steak and bistecca. There have been a number of threads on this topic here over the past 6-12 months. Sostanza gets a lot of recommendations. Here is a link to a recent thread:
We went to Trattoria Sostanza and it seems to be a board favourite. Here are couple of threads that might be helpful:
my review of Florence
http://chowhound.chow.com/topics/698856 :: Review: Sostanza, Grom, Borgo Antico, Gilli, Cibreo Trattoria, Golden View | Florence
previous thread on Bistecca in Florence
http://chowhound.chow.com/topics/418151 :: Looking for Bistecca alla Florentina in Florence....
We have a long-standing Thanksgiving tradition -- avoid family squabbles and dried turkey by going to Italy over the long weekend. One of our favorite Thanksgiving substitute feasts is at Trattoria Coco Lezzone. The Paoli family prepares great food (does anyone know if the son, Luca, still waits on tables?). Make your dinner reservation at least a day ahead and be sure to let them know you'll be ordering the Bistecca alla Fiorentina.
Be sure to order at least two vegetables -- delicious and you'll at least be able to look your cardiologist in the eye.
We had dinner at Buca Lapi in 2009 and it was great - but we didn't have Bisctecca there. I wrote this in my diary "We had our first taste of Crostini Neri – the first of many chicken liver crostini to come – and fantastic “cured meats”. Hubby was thrilled because he had amazing cannelloni. It was a wonderful dinner in a charming small restaurant.."
We had Bistecca at Ristorante Da Padellina in Strada in Chianti, a small town approximately 20 minutes outside of Florence and it was amazing. Our best meal of that trip was at Sostanza. We didn't get the Bistecca (because it was lunch), we ordered the butter poached chicken breasts and the artichoke "tortino", both of which were out of this world!