Wendy – If the flooring in the upstairs apartment is compliant there is nothing much that you can do apart from attacking the problem from your side of the floor/ceiling slab. If you are worried about the quality of the upstairs acoustic report then you can you carry out your own acoustic testing to verify that it complies.
Can you speak to an acoustic engineer … perhaps there is something that can be applied to your own apartment interior to dampen the noise? Foam ear plugs that you change frequently to prevent ear infections may also help.