I never used the onboard iron, but did laundry in the laundry room on deck 2, and I can tell you that laundry room is TINY, long and skinny. The ironing board was a small one. I watched a lady use the iron once, and she had practically no room to do her ironing, with the washers and dryers practically touching her back, and I've heard others talk about brown stuff getting on their cloths. We took our own,and used it when we wanted to in our own room. I know you aren't supposed to, but we did anyways, and it was fine. I can't go anywhere without my own iron.