Preferred Hotel Reservations is the official housing agent for this event. They have negotiated special rates and conditions for the participants of the ISWA World Congress in Rotterdam.
If you click on this link, you will see the selected hotels in Rotterdam in order of distance towards the congress venue. When you click on a hotel of your interest, further information and conditions for that hotel will appear. When you wish to book the hotel you can simply click on the button to book the hotel. You do not have to log in when making a reservation, you will receive your login details after finishing the booking.
You can use these details in case you need to adjust or cancel your booking.
If any assistance is required, you can contact Preffered Hotels directly at firstname.lastname@example.org.