The article says "Love hotels flourished when people didn't have any privacy for secret relationships. I wondered what happened there."
Juding from the name, the author would be able to understand what happens in that kind of the hotels. Strictly speaking, love hotels are not declined industry, but are still flourishing in urban areas or around exits of express ways.
On the other hand, I wonder where overseas' people are enjoying intercourse.
Tainted love: Bob Thissen finds beauty in derelict Japanese love hotels
http://edition.cnn.com/2017/05/03/arts/abandoned-hotels-photography-japan/index.html
