A laundry service is a service in a hotel that washes and irons clothes for guests. Almost all hotels have a laundry service. If you hand in clothes one day you should get them back a day or two later. The laundry service will wash, dry, and iron your clothes. After a batch of laundry is dropped off, it is washed in a commercial washing machine and dried in a commercial dryer. It is then double-checked to ensure cleanliness and folded before being returned to the customer.