If you're driving, use the paid underground parking garage PARKING DU CHÂTEAU
The castle entrance is a 100-meter walk away. The pedestrian-only Place du Château is accessible from the Old Annecy district via the castle ramp (uphill), starting from the Palais de l’Ile, for example.
SIBRA Bus Line 7, “Clinique générale” stop (Monday through Saturday); Dimbus K, “Paradis” stop (on Sundays).