Germany / Austria Hiking Advice

Hi All,

I am going to Germany for holiday with a friend in June / July. I would like to do a 3 day hut-to-hut hike or something similar, not just a quick day hike. Has anyone done something like this in that area? Any suggestions or pointers in the right direction? There are many websites with average looking day hikes.

Would you be open to getting a guide?