We absolutely loved our week with Rosemary and the Colonel, but you should read the other reviews to see if this is the place for you. Someone else hit the nail on the head, it is exactly like staying with your Grandmother - if your Grandmother happens to own a manor in France. We enjoyed our conversations with the Colonel, and could have spent many more evenings just talking to him. Rosemary is wonderful and kind-hearted, and treats you like family.
Sitting in the courtyard in the evening enjoying a glass of wine while the geese and ducks entertain you, surrounded by the beautiful old buildings is a worthwhile experience in and of itself. However, Bayeux is only a few minutes drive away. The war museum is actually about 2 minutes, which was perfect for us. We used the gite as our home base while touring with Overlord, as well as seeing Bayeux and Honfleur.
Just writing this makes me wish I was back there :) However, if you are a 'hotel' type of person than this is not for you. If you want to dive into the local culture, then this place is perfect.