Hi propertymistro,
Being on the 2nd floor and being concrete,i fail to see any noise issues.
Anyhow why not floating floorboards?Easy to do your self:
Eg:http://www.ebay.com.au/itm/Smart-Click-Floating-Floor-Boards-laminate-/261328447942?pt=AU_Building_Materials&hash=item3cd863a9c6
Or square...