Messrs. Norton & Peel snapped it at least twice, perhaps for this postcard from the 1950s. You can commemorate Gertrude's stay in 1968 by buying a used (okay "vintage") copy here. In addition to enjoying her note to Ann of Racine, you can read the back of the card and learn that it billed itself as fireproof (probably means I'll find photos of a fire somewhere) and at the time offered daily and weekly rates. The daily rates were apparently no longer available by the time the famous photographer and filmmaker Robert Frank tried to stop in.
Today it's transitional housing for 70 formerly homeless individuals. It's the last remaining single room residential hotel in Minneapolis.