Your TK J tix + your Priority Pass should give you access to 3 lounges, IIRC - TK Miles & Smiles Lounge, TK Business Lounge and the IGA Lounge. The 2 TK lounges are pretty much identical in terms of space and ammenities. The IGA lounge is the smaller (and at times quieter) of the three. I'd check out all 3 lounges if i were you. A 6hrs transit is more than enough time