we are arriving in barcelona 3/12 and staying 3 nights at "hotel Juan Carlos...then fly to malaga and stay there 2 nights at "riu nautilius hotel"...then we have 4 nights to spend along the way or stay all 4 nights in seville then the next morning we go by train to madrid and spend 3 nights at "hotel palacio san martin"...does anyone have info on these hotel...and advise on how we should spend the 4 free nights?...thanks