No special access issues
Park the car 1km above Spilia Daveli. You will find a U-bend marked with a small road shrine "Agios Ioannis" (2 Bends above Spilia Davelis parking). Park your vehicle and continue straight uphill on foot with really bad dirt road. After 7 minutes, the road splits. To Sympligades, follow the left path. Take again a small path on the left just before arriving to the quarry ridge.