I've never stayed in a star hotel before, but do they help with laundry if I stay there? How long does it take to dry thick clothes? Can I wash my underwear? I'm afraid it's not clean.

Generally star hotels will have a laundry room, clothes, usually two days can get. However, you want to wash underwear underwear, it is recommended that you still wash your own safer, the laundry room is a large equipment, will not be for your a piece of clothing to wash alone. Laundry room to wash clothes, usually to charge a fee.