That sounds marvelous.
And quite in tune with what an older lady told me many
years ago who worked in a dry cleaners'. She said that they
used two heavy wool blankets as a base, on top of a piece of
metal, then a tight cotton top. This would hold the heat and
moisture in and do a marvelous job of ironing, much better
than the (at that time) available pull-on covers.
Works nicely for me, but it's about time to make it new, it's
about 40 years old now and looking kinda grungy. But it still
works!!