Easy to find a maid to do general cooking, cleaning, or laundry stuff for you, but you might have a hard time getting one to come to just do laundry... that's only like 2 minutes of work to throw it in a machine, 45 minutes of waiting, and 5 more minutes
to hang it up to dry. Then you still have to fold them up yourself, unless you ask her to come back the 2nd day when they are dry.
I'd think that most maids don't like to make the trip for just 1 hour of work or less. But you can get someone to come over and do general cleaning plus your laundry for 2 hours, and it'd only be like 30RMB a trip.