We brought our clothes to them at 6.30 pm and picked it up the next day at 5 pm. Everything was neatly folded (including the underwear); even the socks were sorted and folded together. For a little more than 10 kg we paid 20'000 MMK. Everything was clean and smelled good, except for one of my white shirts which was sprinkled with blue spots - so I won't be able to use it anymore. The other white shirt was fine though.
Small but efficient and well priced laundry service right off the main backpacker strip in Nyaung-U.. much cheaper than any hostel or hotel and the washing is done with care and quickly. Home based business so definitely one to support.