We were in Duinrell at Easter there. Great spot. The whole theme park attractions included and the indoor pool with all the slides as well. We had booked direct with them and were in one of their Premium Plus Duingalows - it was great. Weather wise when we were there it was dry most of the time, but one afternoon it was wet, we put the coats on and continued through the theme park - not a queue in sight. Would definitely recommend, kids had a ball!