We stayed in Zermatt after travelling for a few months and required laundry without paying hotel prices.
We found this local laundry around the corner, and she was lovely. She took a whole bag of laundry, ready for the same day for pickup.
We got charged for one bag of around 20 Francs for about 2 kilos, which was better than paying by piece at the hotel.
We were delighted with the quality of our clean clothes and the service we received.