Please keep in mind that you are only allowed a visitor in your room during the day - it is not allowed to have anyone lodge or reside with you in the room. DUWO and ISS are obliged to comply with the local government rules and regulations, and fire prevention regulations, which prohibit having guests in the rooms during night time.
However, based on availability, it is possible to rent a dorm room for short visits, which is much cheaper than a hotel. Please contact the EUR ISS Housing Team as far in advance as possible about your request. The price for one room for one week is approximately € 175,00.
Otherwise, other good options are:
StayOkay: a hostel where you can book a individual room or shared room from € 20,00 a night. You will get a discount of 10% as EUR/ISS student/guest. The hostel is located on short walking distance of train station Hollands Spoor and other public transport.
EasyHotel a hotel very close to the ISS, which offers private rooms from € 49,00 a night. The hotel is located in the city centre, within walking distance of ISS.