Mr Butterfield said the woman had crowed to staff about a sexual liaison with two footballers in the men's toilet at a sports bar the night before the group sex session.
It is not known if they were Cronulla players.
She claims that on the following night, Cronulla players climbed in through the bathroom window of Room 15, where she was having sex with Johns and Brett Firman.
Mr Butterfield, whose son built the motel-style unit, said that was not possible.
"There's no way you can get through the window," he said.
"They were a great bunch of guys. It was a pleasure to have them here. They would be welcomed back any time."
Mr Butterfield said he felt sorry for Johns and his family.
"His kids think of him as a hero, and he is. But he's being portrayed as a gang rapist, and he isn't," he said.