We got married here last week. It is a tiny 'boughi' (hamlet) situated on a hill in the Tiber Valley, with amazing panaramic views. It is beautifully well preserved and has very few tourists and you can not see it from the main highway, the E45.
I believe that last year it was nominated as one of the most beautiful Boughi in Italy, and if you visit you will see why.
If you are here, we know some very good caterers, Judith and Jeff, who live in Montone and do private dining experiences, tasting and cookery classes. Have a look at their website www.aromacucina.com. Judith runs a food blog which is really interesting. They catered for our wedding and did an absolutely amazing job, it was the best food we had throughout our two week trip to Italy. They are also lovely people!
I can also highly recommend Il Convento Mincione for the accomodation. We hired out the whole place for our family and we had the best week of our lives. Joan, the owner could not have been more accommodating.