Dog friendly accommodation/resort. (Istanbul)

Planning a week away for Bayram. Don't want to travel far ( a few hrs drive away max), somewhere relaxing and scenic ( maybe up in the hills and away from it all...), but most importantly must be DOG FRIENDLY! I like the idea of a self catering cottage style holiday near a river/lake ( ....dreaming of the Lake District back home ) but not sure if there are any nearby. Any ideas would be really appreciated.