My wife was reading over my shoulder and telling me I'm crazy. Apparently we actually went to Zandvoort already the last time we went to the sea and that was where we found the sushi restaurant. I'd completely forgotten because of everything else that's been going on this last year, but yeah the Zandvoort beach is really nice, too, and very similar to Vlissingen, really. Also no crowds (though it was off season). And the nice part was that the train station is basically across the street from the beach/boulevard, as opposed to Vlissingen where you have to walk 20 minutes to get there.