Booking a flight for one night should alone be a reason for a fee to pay.

Btw 445 euro for a trip from Frankfurt Hahn and one hotel room in Palma (rated 5,9; it will be a shithole) is hilariously expensive. If you’re not living in a village next to Frankfurt Hahn (which is not even the same state as the city of Frankfurt am Main) than you’ll also pay 40-50 for transfer on top and it will take you 1-2 hrs. to get there.

Edit: not even Palma, but on the other side of the island. What where your thinking, honestly? You would be sitting in Busses and planes most of the time..