first of all: the view is really as amazing as in the pictures!!!
we had a great stay at the apartement. it's really spacious and well-equipped (also the kitchen - except of oil or salt). the bed is really comfortable, the only thing i didn't like so much was the bathroom - it doesn't look very cozy, but it has everything you need.
the center of den haag is just a 15-minute-walk away and there is a grocery store nearby. the introduction booklet Elwin sends you is also very informative.
overall: an amazing experience! very recommended!