Jabula by the Sea is in Plouhinec Cap Sizun, which is in Finistère. Make sure you add the postal code 29780 into your navigator when searching for Plouhinec. Otherwise you will be directed to another Plouhinec which is in Morbihan, about 120 km away!
The nearest railway station is in Quimper. Check timetables at www.sncf-connect.com. There is a bus service from the railway station to Audierne via Plouhinec. For timetables please go to www.BreizhGo.bzh.
The closest airports are in Quimper and in Brest.