I loved the concrete floors, 13-foot-high ceilings … and that it was a pretty neutral canvas to work with,” the renter says. “I did not love all the gray and the super-white walls.” ...

We gave interior designers Darren Jett, Noz Nozawa, and Xavier Donnelly a photo of the same empty bedroom for a young professional—and then asked each of them to renovate it in their particular style.