We used the train after booking on RENFE site, very easy to do in the end. Cost for a first class ticket was 44 euros each which included entrance to VIP lounge at station with free drinks, snacks etc, large leather seats on train, a 3 course meal with wine, tea and a liquor if wanted. Great journey seeing the countryside and only took 2 hours 20 minutes . Would recommend highly and will use for other city trips.