That's a very good SPA! The salt world is not very interesting, so you can skip it, unless you would like to float in salty water. The sauna world is very cool though, especially the surprise showers.
Nice and friendly hotel
Extremely nice spa - not overcrowded, reasonable amount of saunas, a lot of space. Definitely worth to visit ;)
If you go early in the morning, you have bigger chances of enjoying saunas and salt pool alone
Different saunas, pools and a good place to relax.