Horse21 reservation system lets you book Hydra hotels instantly. Go to the page of the hotel you would like to book, choose your check-in and check-out dates, enter the required number of guests and press "Book" next to one of the accommodation possibilities you see on the screen. You will be redirected to the Customer Form to complete your reservation. The room charge will only be debited to your credit card after your checking in. Note that booking Hydra hotels via our system you may be given a discount! To find out more, follow this link.