This lounge is definitely average when compared to airport lounges in other countries.The whole point of a lounge, I think, is to provide a secluded and calming area with perks, like food & drinks. If the entire terminal has a tendency to be pretty calm, compared to other busy airports, well then it becomes as useful as this lounge.
Perks:
-Decent washroom. Better than Terminal 1 washrooms, anyway.
-Snacks, liquor available. Check timings for complete info.
Downside:
-Uncomfortable seats
-Bad service
-Free Wifi is available throughout the airport anyway
-Boring, sterile ambiance