We pack with doing in-room laundry in mind-- mostly lightweight, quick-dry clothes, or clothes that will hold up for multiple wears between washes. We bring a spare bar of white soap and wash the delicates and lightweight stuff in the sink for a 7-day, and hang up any "outside" clothes to air out for a day or two between wears. Make sure to wring your clothes out well and let them drip in the shower stall, and once they've stopped dripping, you can move them out to the main room.  
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