He tells CNN, "It's a natural human desire. Even these days, on the weekend, every love hotel is full of people -- it's hard to get in.”
"Seventy-five percent of our guests are members of our points program," he said. "They carry our points cards, they collect points and they receive gifts. That's something people are very comfortable with, and I think that reflects the customers that we attract."
He tells CNN, "The bad image that love hotels had has faded over time. Also, customers started to raise their voices and became more selective about choosing hotels. In response, management has improved."
Tokyo hotels tend to be tamer, focused on winning customers with amenities. The Style A Hotel, for example, offers a suite for $190 that includes a full-size Jacuzzi and a private sauna.
Though young couples make up the majority of customers, they are not the only ones. One man, who declined to be named, told CNN, "I go to love hotels when I'm drunk and don't feel like going home."
Whatever the reasons, the hotels have been doing well enough that Mansfield recently went to London, seeking investors to expand.
"Through our research we've worked out that 90 percent of owners have five or fewer hotels," he says.