A couple of weeks ago I was invited for coffee at Grand Cafe Walter Benedict which had just recently opened. I was pleasantly surprised by the ambiance, service and the most important aspect: the cappuccino was really good, bonus! Walter Benedict serves breakfast all day, yes all day, they really captured the French atmosphere without overdoing it. The entire vibe is so laid back that I will definitely be going back again soon to try the food.
Absolutely The Hague! 
Seems like the perfect spot to hang out and have a casual coffee!
It really is they were still busy with the small courtyard at the back but also have a couple of chairs and tables out front. If you visit The Hague soon it would be nice to meet up.