The link you followed will bring you to this page:

https://booking.inferrara.it/it/b/esperienze/castello-by-night-speciale-notte-rosa-VCASTROSA?Destination=%5BCOD%3BFERRARA%5D&SearchId=05bee741-55b3-4d15-9972-7e56aee11144&FromResultBox=True&sm=false&StartDate=20260620&EndDate=20260620&Groups=[A1;C7]&Sm=true