[To the surprise of everyone - surely - Sebastian doesn't seem to have any plans to relax in any hot spring. He does follow the path just to check what's going on now, and looks thoughtfully at the springs once he reaches them. Doesn't even raise an eyebrow at the new person standing there, although after a moment he offers:]
I would not assume it to be a first priority, but anyone is encouraged to relax in these, should they so wish.