We went to the zoo weds morning by tram from Centraal station,line 9.We bought a tram saver strip for 6.8euro covering 3 of us.Entry was 16.2euro after a discount.
The zoo was very clean and had a great array of animals,including a gorgeous black panther.
There was a great reptile house and monkey house.
Lunch was very reasonably priced in a modern restaurant with very clean toilets.
Staff were very helpfull and happy to discuss the animals.
Altogether a very happy experience and highly recommended,
especially if you have children,for which there were plenty of activities and numerous climbing frames.
There is also a very good aquarium with a crocodile pit.
I have been to Paris zoo and this is superior,although Paris is only 5euros.