dddx, I've never seen an Iron in the Hostels I've stayed at, so not sure whether these are provided or not? Some of the Hostels and B&B's I've visited didn't even have laundry facilities, as there were commercial laundries within a short walking distance. Some of the commercial laundries were self-serve and others were "service wash" locations, where they provide the service of washing, drying and ironing if necessary. I've never seen an Iron in the self-serve laundries; most of these just have coin operated washers and dryers.
I always use "travel friendly" Tilley clothing for trips, so never have to worry about wrinkles in clothing. Some of the products can be washed in a Hotel room sink and be dry and wrinkle free in the morning.