Siena, like other Tuscan hill towns, was first settled in the time of the Etruscans (c. 900–400 BC) when it was inhabited by a tribe called the Saina.
The service in Italy's restaurants are generally slow. (The same can be said of Spain in my experience.) Being on a tight schedule, Rose and I would at times buy some food to-go and just eat it in the public square. The nice thing in Italy is one can order a bottle of wine to-go and drink it outside. Interestingly, almost everyone drinks in Italy, and yet there seems to be no problem with alcoholism.