Of all the stations on this line, the one at the airport itself is probably the least inspiring in looks...
There is hardly anything that jumps out at you...
and certainly nothing to make you go wow!
Apart from a few patterned columns that's just about it...
Maybe they felt that there was enough of a wow-factor in the airport itself, and that making any more effort in the artwork department would be over-egging the pudding. Who knows? Maybe they were right, as the airport itself is certainly splendid.