Flight
Pisa Airport is generally closest option (2 hour drive) depending on your preference you can also fly to Rome, Bologna or Florence and journey on to Siena. To Pisa you can fly from Bristol or London Stansted Airports. Rome is only another 30 minutes away from the province of Siena a 2.5 hour drive in total.
Rental Car
The closest town to the wedding location is Siena however the villa and abbey are located in the middle of rural Tuscany are another 20-30minutes away from here. Public transport is not easy to navigate from Siena to rural Tuscany, we know Joe and I tried it out for you beforehand.... Really the best option from Pisa, Florence or Rome is to rent a car.