By car

From Utrecht: 

A12 (until the end) direction Den Haag/Scheveningen

From Rotterdam: 

A13/E19 direction Amsterdam: A12 (until the end) direction Den Haag/Scheveningen

From Amsterdam:  

A4 direction Den Haag, A12 (until the end) direction Den Haag/Scheveningen

At the traffic lights at the end of the A12 turn left. At the next traffic light turn right. You are at Koningskade (direction Scheveningen). At the third traffic light, turn left into Laan Copes van Cattenburgh. After approximately 500 m, at the first traffic light, cross over to the other roadway via a (nondescript) short cut. Once on the other roadway, you will find the office almost immediately on your right. 

By public transport

From Den Haag Central Station take tramway 9 direction Scheveningen Noorderstrand. Get off at the third stop (Javabrug) and cross the rails into Javastraat. Turn right at the second traffic light in Javastraat. You are at Nassauplein. You can find the office after 60 m. on your right