From The Hague/ Schiphol (A4)
You can park your car in front of the Q-Port office building.
Train station Sloterdijk is situated on five minutes walking distance from the Global Knowledge offices. For up-to-date information on the public transport you can call 0900 9292.
Best thing to do is take a look at the IBIS web site for hotels in the neighborhood of Amsterdam Central Station. That is a nice surrounding and you can take a train to the training center.
IBIS Amsterdam West Corner
IBIS Amsterdam Center