I think the strata manger is correct. How do you silence a shower, a wardrobe?
Well, the simple answer would be that if carpet has been replaced by inadequately insulated tiles, and the block was designed to have carpetting on the floors, then replace the most effective form of insulation to cut down the noise.
Have a look at these guidelines from the Australian Association of Acoustical Consultants HERE and HERE. They explain how excessive noise in apartments can be a lot more than footfalls on tiles.
It gives me the extreme irrits when investors chose to cover their floors with the most durable (na noisiest) form of flooring so as to save themselves money, at the expense of the peace and quiet of the poor blighters below.