I had a GLA 200d as a courtesy car and once you take in to account what it's like to drive, how (un)confortable it is, and how poor the interior is given its price tag, I'd say it's just about the the worst car I've ever driven.
Drove one when the missus A-Class was in for some major work. The only 2 cars I would avoid from Mercedes: GLA, as doesn't provide higher driving position, as myself, and many assume would be the focus and yes, harsh suspension. Mpg was pretty bad. And the B-Class. Hate them. Sloppy handling, poor mpg. New GLA seems to be pretty decent. Waiting to check it.
My 19 A-Class is much, much nicer than my partner's 65 A-Class, despite hers being Premium Plus. But mine isn't anywhere as sharp to drive as my previous 15 Leon SC 1.8TSI, or the, often underated, Mazda 3.