Trend Report: Is Navajo the New Persian? via @domainehome I say yes. I think navajo rugs add a distinct shot of unique American graphics. They work best in spaces like the one pictured, however--elegant, restrained, and otherwise paired down color-wise.
An eccentric handmade shelf, with a backdrop of an assortment of kilim wall tapestries, a cowhid rug on the floor, a more industrial office chair and desk to the left (from what I can make out)... all give this space its liveliness, pattern, texture and undeniable bohemian chic.