After the peage of Lançon follow Marseille / Marignane (A7)
After Marignane stay on the A7, don't take direction Vieux Port (A55)
At the split-up Marseille / Aix follow Marseille (left)
Take before-last exit: St Charles
Stay left, pass underneath the highway, after the 2nd traficlight
you got the St Charles train station on your left, go straight on
steep down, curve to the left, the hotel is on your right