From Utrecht (the A28), take exit 4 to Soest. You will pass an industrial area. Cross the railway line and turn left 200m after the traffic lights (Pimpelmees). After 100m follow Bosstraat (bend to the right). You will see the hostel on your right after about 400m.
From Amersfoort you can reach Soest via several routes. In Soest you drive in the direction of the industrial area. Cross the tracks and turn left 50 metres after the traffic lights. Then follow the road to the right; the hostel is on your right.
From Amsterdam/Hilversum (A1) or Hilversum (A27), take exit 10 to Soest. Turn right at Paleis Soestdijk. Turn left at the first set of traffic lights. Follow the road all the way (2 km) until it bends at a right angle. After 200m take the first street on the right (de Pimpelmees). This street changes into the Bosstraat. The hostel is on your right after 400m.
You can park for free in front of the hostel. You can charge your electric car at a charging station here.