It was a privilege to stay in the apartment. You step out of the lift and are just wowed by the view of the Hague. From the room, you can observe Rotterdam´s skyline - bringing your binoculars is definitely not a bad idea. You can reach the top of the tower by a glass elevator for free. The room is clean, enough storage space, kitchen is equipped.
Walking distance to the city centre, Den Haag HS train station less than 5 minutes walk, same applies for supermarket Albert Heijn.
I didn´t meet Elwin in person but my questions before arrival were answered here quickly. Friendly staff at the reception and in the Penthouse restaurant.