Then use 22mm ply and put down wood-effect vinyl. It's cheaper than the real thing, softer, quieter, low maintenance, withstands water, is easy to change as fashion dictates, and you won't be tip-toeing around in slippers while praying you don't scratch it.Love the exposed pale wood floor look.
You can get vinyl that looks like that too.I also like the polished concrete look but not in period property with suspended timber flooring.