Thermal Spa regions in Styria: 

Bad Radkersburg, Bad Waltersdorf, Loipersdorf, Bad Gleichenberg, Bad Blumau.

Bad Gleichenberg lies in the southern part of Austria. 

Hotels and accommodation: accommodation is available from 5 star spa resorts to small B&B's

Sights and sightseeing: Graz, vineyards (Weinstrassen - wine routes) in the southern part of Styria (often called the Styrian Tuscany)  

Getting there: Flights are offered from all major capitals to Vienna, then onward travel by train or car. Alternatively direct flights are available from London to Graz.