The Penthouses of Grand Hotel Huis ter Duin feel like coming home. Located on the eleventh floor of the hotel, you will experience the ultimate luxury. Your own private residence on the top of the Dutch dunes. Did you know that Grand Hotel Huis ter Duin named its Penthouses after the persons that were important to the hotel? For example, Grand Hotel Huis ter Duin provides the Van Marwijk Penthouse, two Felderhof Penthouses and the Advocaat Penthouse.