There is a trend in Rotterdam and the rest of the Netherlands with all you can eat sushi bar within two hours sitting. I tried a such a place a few months ago and didn’t like it at all. The rice is not as good and I noticed quite a few greasy dishes on the menu.
I tend to stick to my favorite place for sushi and sashimi. For example, the fixed menu below is 57 Euros (drinks extra). The owner said despite so many sushi bar popping up within a few blocks of his restaurant, it has not affected the sales. His customers know that you have to pay more for quality than quantity. I’ve been one of his loyal customers for a few years now.