Don't expect much.

IIRC you get assigned a tiny personal "prison cell" with a shower and sink. You get your own key so can leave your luggage inside. There is also a small common area to sit and read the newspaper and have a coffee. Not much more than a few croissants, etc. to eat.

Unless arriving far too early to check-in to your hotel (or have no choice but to shower here before going straight to a meeting) I would give the arrivals lounge a pass...