That bathroom layout has become extremely common in normal hotels in parts of Asia and the Middle East.

But what's the logic? I have never seen it but it doesn't sound good even aesthetically (which is usually the justification for all kinds of violations of common sense). So what are they thinking?

It also sounds like a plumbing nightmare to build.

A number of hotels that were built with this lack of privacy (including one I love - but its been fixed there though - more subtle worse as you could see in from the stairs) were all designed by the same architect who is said to have had a kink about looking into toilets.

Maybe he started it, and as his hotels are (otherwise) lovely it made it part of a cool aesthetic and was therefore copied?

https://en.wikipedia.org/wiki/Geoffrey_Bawa

Where is Asia? I travel there often for work and have never come across such a layout

It is the large landmass covering about half of the northern hemisphere.

I get the joke on OP's typo for is/in, but even then you answered "what" instead of OP's "where".

It’s miscommunication all the way down

I live in Asia, I've only seen in love hotels.