He wasn't staying at the £80 hotel.
That's just the place he took her to when he'd picked her up. He claimed (according to the DM) that he couldn't take her back to his own hotel as he was sharing the room.
Personally (If its true) i think he probably didn't want his friends, who he was on a stag weekend with, to know what he'd been up to and or any press that might have been there.
And lastly, the girls a scrubber, she was gonna do 'the deed' anyway, why fork out for class when she clearly has none?