The blacked-out-sound-stage look was a trick Lost in Space had used many times.
And the third season of Batman
, which was also from 20th Century Fox and had art director Jack Martin Smith and set decorator Walter M. Scott in common with LiS.
Is the the only description? Because "stylized" could mean almost anything other than looking normal. I certainly don't get "surreal" from that (a word almost everyone uses to mean something "bizarre" rather than what surrealism actually means).
Well, "stylized" clearly means that it looks different from reality. And "surreal" literally means "beyond the real." Naturally there's plenty of room for interpretation between the script and the screen, but the script was clearly indicating an unreal quality to the environment.