I have washed shirts, socks, trousers, and smalls in the sink. :shock: Not because of hotel laundry costs, mainly because my Hilton Diamond maintenance strategy rarely allowed me to be in the same hotel for two consecutive nights for the first six months of the year!!!
Good "wrinkle" free clothes are key for me. Traveler shirts from Thomas Pink (100% cotton...of course), M&S wrinkle free trousers and chinos, make life a little easier. I do like to have an iron and ironing board in the room.
I have never tried the steam trick, so I'll have to give it a go.