Just like they do it in Venice. 
Well, maybe not quite. But what a handy web catalog, nonetheless. AT reader Gary tipped us off to Lifestyle Clotheslines.com, an online catalog of clotheslines based in Australia.
Buy a retractable clothesline for your bathroom, sit in the bathtub and dream of being in Venice. Gary bought one and he says the product shipped to him no problem from down under. (thanks for the tipoff, Gary!) -regina
It's not that difficult to find a retractable clothesline in the U.S.
http://www.nextag.com/retractable-clothesline/search-html
Mum did this 30 years ago with a line from elfa. Can't believve someone shipped a clothes line all the way from Oz.
However thanks for the link -- my old rolling ones are falling apart.
I have two large wooden folding drying racks from the Gaiam catalog; I airdry quite a bit of my laundry inside my house and it dries surprisingly fast.