MIELE Wash World in Frankfurt's Bahnhofsviertel is probably the most cosmopolitan laundromat in Germany. Here, the dusty pants of Eastern European construction workers spin at the same 1,600 rotations as the socks of German pilots, the colorful skirts of Roma women, the business clothes of Indian IT engineers, the white underpants of hearing-impaired people, the hairy towels of hairdressers, the shirts of Ukrainian refugees, the sheets of sex workers, the suitcase loads of tourists from South Korea, Brazil or the USA and the sleeping bag of homeless people who used to be truck drivers.