Tbf, I have also had issues trying to "hide stuff" in a sense. Not only was putting a wardrobe object inside the building wardrobe hard because it would not let me access it, but I have also tried putting some storage objects indented mostly within the wall so that it looked built it but it would stop me from being able to access it. I think the interaction ability can be a bit finicky with these types of things, but that's just from my own personal experience.