washenjoy. A laundromat with locations dotted around bangkok. Different sized machines for different sized loads. The bigger the machine, the greater the cost. You can pay by cash (coins only) with a coin dispensing machine onsite if you only have notes. There is an app that can be downloaded which enables you to pay by card, but i had trouble with it, can’t remember why. Cheap as well. I D.I.Y, but from memory you can leave for the onsite attendant to do for you and come back later. The particular laundromat i went to has a shoes off policy in accordance with Thai culture. Instruction signs are in english.