By Train:

Train Station "Chiusi" (ca. 39 km from Bagno Vignoni): You can rent a car at the station (Hertz Rental in Chinaciano Terme, Tel. +39 0578 27 50 26), then drive the following route Montepulciano > Pienza > S. Quirico > Bagno Vignoni. We offer a transfer service upon request (additional fee). If you are interested in this service, please contact our Reception team.

By Plane:

Airport Siena: 50 km  
Airport Florence: 100 km  
Airport Pisa: 160 km
Airport Rome: 210 km
Airport Perugia: 100 km 

You can rent a car at the airport (Hertz Rental has offices in all of the airports above, and also in the Chiusi Station - hotel guests receive a special price from Hertz), or contact the hotel for the transfer service. 
More Information from Hertz
 
Contact us or your travel agency for other up-to-date information regarding transportation.