Yes, loads of times.
Scheveningen is the seaside end of The Hague, a short drive ( but mind the cyclists ) or a tram ride away from the centre of The Hague, although I was last there about 5-6 years ago. Looking through my expense reports from that time on 24 Sept 2002 I ate at Visserie de Dagvisser at 26 Dr Lelykade, tel number +31 (0)70 350 0593. This is situated around the inner harbour of Scheveningen, along with several other fish restaurants. I had matjes herring to start with, followed by baby soles with a white beer and paid 23.25 Euros. See http://www.debesomming.nl/dagvisser/index.htm
Around 1996 I also had a good fish dinner at a hotel just up the coast towards Katwijk but I've thrown away the expense vouchers from that time and I can't remember the name.
In general Dutch cooking is rather turgid and unimaginative, even a step down from English cooking. OK if you like your lunch from a choice of 200 different cheese slices, or croquettes.
With reference to Daniel's observations on Imbiss stands with beer and sausages, I think you may find these about 170 miles to the east in Germany. I've never come across these in Holland - herring stands maybe, but not sausages.