Since my house was converted to a duplex long ago, we have an unpainted/unstained pressure treated wood staircase and landing that runs from the back door of the second story. (Similar to what you used to have.) It was installed back in 2011 before we bought the house, but the wood on...
We also later went on topaint a decorative stencilto this same floor to add even more interest to what was once a plain, boring ol’ concrete floor. So long story short: there are lots of great options for upgrading your concrete floors. Just choose your stain color a bit more carefully...