Carnac is loaded with sleeping options, but you'll need to book ahead in summer.
Feature: Treetop Sleeping
For the ultimate eco-escape, don't miss eccentric Dihan, a guesthouse secluded in a leafy dell just outside Ploëmel (follow the black signs from the village), 8km north of Carnac.
Run by a fun-loving couple, Myriam and Arno Le Masle, in its former life the property was Myriam's grandparents' working farm. The farmhouse and barns now house guestrooms, while the grounds shelter yurts imported from Mongolia, bubble tents and tree houses. Should nature call, there are biodegradable dry toilets (you'll find brightly tiled bathrooms and a sauna in the reception building).
Guests can fire up the barbecue and dine beneath a pergola. You can also rent bikes (per day €12) or book a massage (one hour €85).