"We do, I've used them before. Aymeric's estate has them." Estinien's rather a bit of an outlier - much of Ishgard has indoor plumbing and heating, aside the poor wretches down in the Brume, but Estinien...Estinien barely even owns property outside of that which he carries. Didn't even expect to retire. This bold new world where his endless quest is ended is still very strange to him.

So yes, he does need to be reminded that baths are a thing you do more than once a month. Reluctantly and still very naked he slips out of the bed and goes to dutifully turn the water on. "Now what?" he calls back over the sound of running water.