Obviously it didn't turn out as well as people hoped, however I don't think it's an ugly building. Moreso I think the problem is the location. It's completely hidden in most skyline shots, so it doesn't have the effect that a building of its stature should. Had it been built a bit further west or east I think there would be a lot more praise for how it turned out, simply since it would've been much more visible.
For example, the shorter tower of Ice is about 50M shorter than the architectural peak of Trump, yet even though it's not even finished cladding is already a lot more prominent on skyline shots. The taller of the two will be even moreso once it's topped out. Trump in this location would've been much more iconic.