This Spring Season Book Your Next Holiday & Get 10% Off IBEROSTAR Hotels, Spain. Look ahead to Spring and book your next holiday, 10% discount and room upgrade when you book before 06/01/2016 for stays between 20/03/2016 and 10/06/2016. Easter not included. T&C: Discount valid for the IBEROSTAR hotels in Spain, except for the IBEROSTAR Las Letras Gran Vía or the IBEROSTAR Grand Mencey. Minimum hotel stay: three nights. Offer valid for bookings made before 06/01/2016 and hotel stays from 21/03/2016 to 10/06/2016 Easter not included. Subject to hotel availability. Book Now.