We have never been able to see illuminations from any of the buildings we have stayed in, but I understand some can have a slight view of them in the distance. We have always been able to see the fireworks at DTD.
We have stayed in buildings, 19, 20, 22, 16, 45,46,53, and 56 and there were never illuminations views from any of those.
We were in building 26 on the end closest to 25 and could see it partially (big palm tree in the way). I think if you went out onto the bridge that leads over to the HH you might be able to see them. We could also see part of them from 28. I think it depends on the part of the building and which floor. Both times we were on the 2nd floor.