Rogaška Slatina is Slovenia’s most famous thermal spa. You can see one of the best of its foreshortening. The quality of the treatment in the resort, in terms of training of the personnel and the composition of the thermal water, is not worse than in Slovakia, Hungary and the Czech Republic, but it’s still inferior to Karlovy Vary.
The resort is worth visiting, in terms of health improvement, and you can visit it all the year round. But, in winter, it is not as beautiful as Karlovy Vary.