Horse21 reservation system gives you access to any rooms in Parergon hotel. Please note that the booking is to perform using a credit card. The booking proceeds automatically at any day- or nighttime. Having filled in the Customer Form and accepted the Horse21 booking Agreement you will get a booking confirmation just in a few seconds. Any questions you have are to be addressed to our Customer service at +31 (0)20 4895917 or via the Feedback form.