Bad Gastein is 1,000 m above sea level, at the middle of the Hohe Tauern National Park in the Salzburg region. It can be visited all year around. Most people visit for skiing purposes during the winter season. For summer activities, there are hiking trails, running and Nordic walking routes, biking and bike tours in and around the Hohe Tauern National Park.
Bellevue Alm, Windiszgrätzhöhe and Orania Stubrl are three very good, Austrian restaurants located in and around the city. If you're skiing, make sure you visit Jungerstube.