Love that place!!! Especially those treats they give with every coffee! I recommended it to all of my friends :)
The service is adequate, the food nothing special. I had a salad with a main course, my husband had soup (which you could completely tell was out a can) and a main course - as mentioned above, there was nothing tasty, or special about the food. I think if you are looking to visit the Berlage you can better go elsewhere for dinner and then go to the Berlage for drinks and dancing afterwards.
It is a very nice cafe that you need to be. Especially the jazz nights are amazing.