I couldn't tell from the photos on Expedia, but looking it up on Google after I booked it, I found out it was a love hotel. (Perhaps I should've noticed when the listing said, "adults only." Since it was non-refundable, I ended up staying there for a night.
I've heard a rumor there are so many Chinese tourists in the area nowadays, most of the hotels are booked solid. Perhaps that's why an establishment like this decided to open up to non-love hotel users. Just a theory.
They did seem to pretend like they were a normal hotel. Upon quick search, the tv channels didn't seem to have any porn. And I didn't see things like condoms in a vending machine. However, I did see a maid costume on sale inside the room. And there was also a prominent "neck massager" by the bed.
In case you don't know what a Japanese love hotel is, I urge you to Google it.