My favourite worst was the old dark wood AA lounge in MIA which looked like it hadn't changed since 1979. Dreaded going there. Never ate inside either as the food options looked awful.

The AA lounge at AUS isn't much better. Tiny, looks like it's a temporary location, no real 'food' to speak of, often warm and packed and the bar can't even produce a G&T (it's a gin & soda). AA was planning to turn AUS into a hub and brand new lounge, but it never happened. Ironically the Delta Sky Club lounge at AUS is very decent.