Let's be honest: is a little lusting necessarily a bad thing, especially when this is the object of your affections? Okay, it actually is a bad thing, but it's hard to resist the temptation, no? If I had a staircase like that, it would be hard for me to ever climb the stairs. I'd probably place my favorite books under the first step, and I'd be stuck every time.
I looked around apartment therapy, the site where you can find the pictures of that staircase. Lots of decorating ideas, and not just for apartments. Many inspirational shots of other people's apartments, bugalows, and whatevers.