Unit Bath...???

"Unit Bath", this is Japanglish and how we call the prefabricated bathtub room here in Japan. It was actually delivered in pieces and two staff assembled it within a day.
We were considering to have a very Japanese style of shower room with stone bath and wood wall. However, it was a quick decision to have a Unit Bath when we paid attention to its advantages. It is easy cleaning, spill proof to lower level, replaceable and more.