I play on the 360 and hjerm is my favorite house so far available on account of all the awesome armor mannequins and dagger cases. But whenever I try to put anything on them once I leave or re load everythig is on the floor or dissappears. Fix?

This is the house in Windhelm yes?
Did you buy all the upgrades for the house before completeing "Blood on the Ice" and if not, did you get the upgrade which clears up all the mess -blood and such- left there from the killer?
I personally have not had any re-loading problems either way with the house but it may help

I don't like using it because it's so creepy knowing what the back room used to be..

Yes I have on 3 characters an didn't help I don't get to use hjerm I guess