Horse21 reservation system enables you to instantly book a room in Castellano III (Hotusa Hotels) hotel. Rates and availability information gets updated in the real time mode. The booking is to perform using a credit card which guarantees your checking into the selected hotel. All card data are encrypted before transmission via Internet, which ensures your information privacy. After you have entered check-in and check-out dates, the number of guests arriving and chosen the appropriate accommodation possibility, you will be taken to the Customer Form to complete your reservation.