“That’s a nice airport” = ceilings are high “That’s a bad airport” = ceilings are low

Counterpoint: CDG is a bad airport with high ceilings. (I'm struggling to think of a good airport with low ceilings, though.)

I think CDG is pretty decent. However, Heathrow is terrible and has very high ceilings.

My recent LHR experiences in both T5 and the Queens Terminal were pleasant and efficient. CDG has good airport hotels & trains, but transferring between 2E and 2F is awful, the lines for anything in 2E are awful, there's barely any water behind security in M, & food in M is bad.