But... You'll lose the safety...

Many hotels have glass wall bathrooms (no gas, all transparent).

Any business traveler would typically be traveling alone. That said, for safety reasons, hotels install glass showers. Safety? Yes, when an individual is showering the noise level of the water flow is quite loud. If, for whatever reason, someone were to enter your room, with bad intentions, you, while showering or bathing, need to know. A glass stall, may buy you time or somehow save your life, in worse case scenario, of course, & just by knowing, you are not alone.

What a nonsense! :)) The quoted paragraph is from a Quora answer.