Even if you're not staying there, do go and have a look at Sequioa Lodge. The bar and lounge area very attractive, though it certainly doesn't have the wow factor of Wilderness Lodge. Also I don't know what it will be like visiting in the summer, as we always go in the winter and so can enjoy the huge log fire they have there.
Yes, the decor at the New York does look strange in the photos, but, honestly, once you're in the rooms the decor seems quite restful!! The rooms are also a similar size to the Disneyland Hotel so more what you're used to. The rooms at the Newport Bay are a bit smaller. But I think for a couple of nights you'll be just fine at the NB, it certainly has enough amenities to keep people happy for a short visit.