Get Early Booking Discount of Up to 30% Barceló Hotels, Spain. Book your stay in advance at Barceló Atenea Mar, Spain and avail early booking discount. Enjoy the great discount of up to 30%, if you book in advance. Terms & Conditions: Offer valid until 31 March 2017. Except from 12/08/2016 to 14/08/2016 and the 15/08/2016 and from 06/02/2017 to 10/02/2017 and from 26/02/2017 to 02/03/2017 and from 25/08/2017 to 30/08/2017. Valid for bookings made at least 60 days in advance.