> lists “Eva’s Blumenladen” (Eva’s Flower Shop) and “Peter’s Taverne” (Peter’s T...

> lists “Eva’s Blumenladen” (Eva’s Flower Shop) and “Peter’s Taverne” (Peter’s Tavern) as usable alternatives, though “Eva’s Brille” (“Eva’s glasses”) remains incorrect.

I didn’t understand why Eva’s Brille is incorrect. Anyone understand the difference? Is it only allowed for commercial entities?