This is a small selection of sites that we think you might find useful.
This provides details of the Hunsrueck a large plateau are that lies above the Mosel, Rhine and Saar rivers. It includes a short movie clip in English. http://www.flyhahn.com/regions/hunsrueck.htm
There is large thermal bath/swimming pool complex at Traben-Trarbach, which is about 12 miles by road from Bernkastel, or much less if you walk up through the vineyards. http://www.moseltherme.de/html/homegb.html