If travelling in C with no status you have access to the Business Lounges. Depending on which gate you arrive, the Business Lounge above gate A26 is very nice but it's in Schengen. You will have to go through passport control to Z departures upstairs where there is a Business Lounge between the duty free shop and gate Z50.

If you have plenty of time you could go to both but otherwise it's better to stick to the non-Schengen Business Lounge on the way to Z50.