User blog comment:Sneak+stab/Adventuring with a Homicidal maniac/@comment-4583616-20111202135422

There actually is a weapon rack in Breezehome. Directly to the right once you enter the front door. I don't know which house upgrade it is to get it. There's also a weapon plaque above the interior front door, and another one to the right once you go up the ladder/stairs.