No more than swimming in the sea.

Usually I find salt water pools more invigurating

Depends - we were once on a complex with salt water and it was awful, just felt like the sea, not good for the kids playing around in really, but we've also been places where it's salt water but doesn't have that horrible stingy feeling, so I reckon there must be something else in there to compensate for the salt.

In reply to my own question......Been there, done that. Whole family in agreement, saltwater pool much better than fresh water. Much easier on the eyes than a chlorine pool. Thumbs up!!!