Elwin's apartment is probably the best you can get in Den Haag. Although we didn't meet in person, we were greeted by the receptionist who was very helpful and helped us get to the parking area which we had trouble finding at first.
The apartment has a magnificient view, which will stun you from the very first moment you set foot in the apartment. We had some trouble with some aspects of the apartment at first, but we took care of it ourselves, even though Elwin was very receptive to our issues and promptly offered us to switch apartments. Apart from that minor setback, we loved our stay. We felt very safe with the keyless entry, the apartment is very spacious, has a pleasant décor, the sofa is very comfortable and so are the beds. We absolutely loved the windows and the view. I would love to stay again another time.