I have to admit that I thought the same thing 'grey bedding cover doesn't look ironed'. I wasn't aware that this was only a day cover, so glad starflyergold answered this question. It makes sense that the day cover in the luxury rooms are grey to match the rest of the room, maybe I was just unlucky to photograph the only one that was not ironed?

In any case, there was no such cover in the suite, so that is why you don't see one. As the rest of the bed area was white anyway, they didn't have to use a 'black' cover

Hope this answers any remaining questions.