No city that I know of takes this approach. I’ve heard anecdotally of some cities striving for it. But I can’t imagine it being at the same level as the Disney culture
My first job out of high school was a summer cleaning restrooms at Disneyland. One important lesson I was taught then that I still apply as a software developer today: Don't just deodorize (i.e. mask the smell). Eliminate smells at their source.
Although, being a US citizen, I'll say that what I notice most when visiting Europe is that the graffiti seems 100x worse to my eyes in most European cities than in US cities. Italy seemed especially bad to me. It's like some child has drawn on the walls of Europe with crayons.
Another interesting point to me is Sydney, Australia. I had visited it as a child in the 80's and remembered a very grubby, dirty city. I visited again a couple years ago and found a beautiful, clean, enjoyable city.