Love Hotels were originally called
tsurekomi ryokan, which I believe translates to
drag-her-in hotel. Some modern Love Hotels have Yen operated video cameras, so that a
souvenir of one's happy stay can be taken away.
Dogenzaka in Tokyo's Shibuya has a high concentration of interesting Love Hotel options for the horny or even just for the interested. Or so I was told by someone who was there...