Tralee Bay in Benderloch, nr Oban is a brilliant place to visit
http://www.tralee.comWe have taken all 3 of ours there for the first week in Spetember for the last 2 years, its right next to the beach and there are plenty of fantastic woodland walks near by.
It looks gorgeous covered with a blanket of snow, I'd love to go during Xmas.
Hope you have a good time, wherever you go :)