We recommend that you book your accommodation nearby or in Grignan which is one of our favourite villages in the area and is only 20 minutes drive from the venue. As the village is very small you can stay anywhere you like, some examples include La Bastide de Grignan or Hotel L’instant Sevigne
Alternatively, there will also be some guests staying at the ibis Saint Paul Trois Chateaux which is 15 minutes drive from the venue.
Otherwise, feel free to look at some options on booking.com, there are many beautiful villages nearby so you can pick what is most convenient for you.