This isn't located in a Japanese style culture, though. It's clearly European style and even looks like early/mid 19th century or late 18th at most. They have all of those fancy clothes and buildings, yet aren't able to clean and wash places properly (despite everything looking very clean).
Since this is a reboot, the author can have actually fixed this issue, but why bother? The first attempt was axed, so let's make the second attempt exactly the same. Surely it will fare better. Well, half-assing fits the isekai genre, if nothing else.