When you arrive in the centre of Mesquer, there's a small square with the town hall and the bar "Le Skipper" on your left.
Go straight on, rue de Kercabellec (towards Quimiac / Port).
After 250m, you will pass by the cemetery (on your right-hand side).
Keep going straight ahead and you will come across the chemin du Velin (on your right - old mill).
Keep going straight on for another 150m.
The housing estate is on the right-hand side, in the rue de Kercabellec.
The gite is the 3rd house (straight ahead of you).