The office is at Havenstraat 87, 2102 LB Heemstede Phone: +31 23 7370060 .
You will enter Heemstede from Hoofddorp. Once over the bridge, that crosses the Ringvaart, you are on the Cruquiusweg N201. You will go beyond the 2nd traffic light. Follow the curve in the road then you are on the Heemsteedse Dreef. You will see water at your right hand side. Turn right at the next street. That is the Havenstraat.