Priority Lounge Frankfurt
The Priority Lounge (not to be confused with the Priority Pass), is located in Terminal 2 at the very end near Gate E9. I was visiting it before my China Airlines flight; it is the lounge that China Airlines uses for its Business Class passengers. The lounge is accessible to those with Priority Pass as well.
Overall the lounge is fine for a quick visit. However for a high end airline like China Airlines, the lounge is a bit disappointing.
There are hot food options as well as other snacks and beverages.
During my visit there was plenty of empty seating. A shower is available to guests.
It is not a lounge that I would go out of my way to visit. There are other Priority Pass accessible lounges in the area, including one next door, if you are interested in lounge hopping.