This is my memory from 30! years ago. The restaurant was one room with one long table. The mother cooked and her son and daughter served. There were bottles on wine and water on the table and they just kept bringing out course, after delicious course.
I remember that we had read about it in Frommer's and it was ridiculously inexpensive. I realize that this was ages ago, but having dinner there was one of my most vivid memories of Florence. Now that we are planning a trip....just wondering if it still exists.