Love the outdoor swimming pool also we are lucky to had possible the best weather in Amsterdam in a year. We heard quite a crowd inside with lots of children noises, and were afraid that it maybe crowded. However, it was pleasant. The pools were big enough to hold all the people with still plenty rooms to feel chill. There were a deep big pool, a small shallow one and one tiny pot for baby. Water was clear and chill. We had no problem with toilets and lockers and changing rooms, there are enough of them. Except there was not really shower after the swim. Also love the grassfield. Soft could walk bare feet and lay under the sun.