Great location, close to transport and the Peace Palace. The flat has everything you need - kitchen equipment, coffee machine and comfortable beds and shower. Separate toilet helpful. Up two flights of steep stairs.
Two things to note from our stay - We arrived to sheets piled high on top of the washing machine and also (cleaned) sheets still inside the tub. As two guests needed to wash straight away, this was really inconvenient; it would have been good to have the laundry area clean. Also, one of the bedroom windows wouldn’t open which made that room very hot, even with the electric fan.
But overall, a lovely stay in Den Haag!