I loved this episode. I can understand why some people would be properly freaked out by large spiders, but I've always loved spiders, so while I found the episode wonderfully creepy, I found myself enjoying the sight of the overly large spiders. That said, I'm sure if I actually saw spiders of that size in person (especially the mother), I would've been shitting my pants, too. Also, I liked how the creation of the spiders was not alien related and I particularly liked how the solution in dealing with them was simplistic and without fancy tricks, just using Ryan's high-bass music to learn them until the panic room.
While the episode was primarily focused on the spider threat, I really enjoyed how it took the time to explore Graham's continued grief over Grace's death, Ryan dealing with his absent father, and Yaz's loving but maddening family. This organically lead to my favorite part of the whole episode: The three of them deciding for each of their own reasons to continue traveling with The Doctor. But not only making these natural decisions, but also how The Doctor made it perfectly clear to them that traveling with her is not safe and there are no guarantees that she'll be able to bring them back. Looks like The Doctor has finally taken stock in the level of danger she has wrought onto her companions over the centuries.
The one thing I could've done without was the Trump clone. While Chris Noth did admirably with what was written for him, I simply didn't see the need for such an obvious parallel, all the way to directly referencing Trump. Chibnall could've easily created a hotel mogul (for the sake of the setting) without drawing such unnecessary parallels. That really took me out of an otherwise terrific episode.
The moment was brief but I loved how we got to see the new look for the time vortex, especially the large node with multitudes of different paths for the TARDIS to take. That's precisely how I've always imagined the time vortex and I hope we continue to see glimpses of that space.