We stayed at Woodland Yurts and Tipis as a last minute break on Saturday/Sunday this week; Julia was really helpful dealing with our last minute booking.
The yurts are lovely, king sized beds, wood fire stove, lanterns and plenty of rugs and blankets. It was lovely to wake up in the mornings and see the blue sky through the skylight. Each yurt has its own picnic table, hammock and campfire area. there are also lots of communal tables set under shelters. There are fully equipped kitchens and bathrooms with electricity, so you don't quite have to be without all mod-cons! Everything has a lovely shabby chic theme and was really gorgeous.
Nearby are a couple of nice pubs and plenty of good walks.