I could be wrong but as far as I remember there are no such facilities on the ship. There are special deals now and again for laundry and of course you can get laundry, ironing and dry cleaning done at reasonable prices on board. You cannot take or use a travelling iron on the ship either. Sorry if that disappoints you Heathe.
Not when I last cruised on it 2 years ago. You can of course send it off at a price, but there are no self-service facilities.
No, no laundry facilities - you send out the laundry to be done, and you are not allowed to bring irons on board as they are a fire hazard.