I can't say enough good things about Château des Reynats. Located in Chancelade, France, it is a beautiful 19th century castle with exceptional service, large, pretty rooms and the fantastic l'Oison restaurant.
After a day of touring the lovely Dordogne region, you can enjoy cocktails in the lounge before heading into the ballroom-like dining room where you will enjoy one of the finest meals in France. While the quality and service are top-notch, Chateau de Reynats is very relaxed and incredibly affordable - a combination you don't find very often. The only drawback is that the town of Chancelade is a bit of an eyesore but it is a good base to tour the region. Drive 15-minutes in any direction and you will be in one of the gorgeous little villages for which the Dordogne is famous.
http://chateau-hotel-perigord.com/