This should help. It shows the walking/staggering route. MG is at A. To drive there you have to go the other way via chemin des caves which is the other side of the river unless you fancy riding through the ford.
We can make it too, the Friday, Saturday and Sunday.
Cant get into Moulin Grenin but the very nice dutch lady has arranged a room at another smaller B and B in Tannerre. Will probably have to make use of the taxi unless I can get a Bike license sorted for Bev in the mean time !! Then again it might be worth paying the taxi
restaurants, barbeques, rideouts....all seems good to us.