When my addicted son lived with me, I would think of ingenious places to hide my meds and he would think of ingenious places to hide his stash of drugs....and we always found each others' hiding places. It's not that hard in a house.
I ended up sleeping with my purse under my pillow, and kept the meds there. It was an insane thing to do but that's how dysfunctional I was at the timed.
On a more serious note, if there are children or pets in the house, hiding medications is not a good idea. If found by the children or pets, it could kill them.
Personally, I will never ever again live with anyone who makes me feel the need to hide anything more than Christmas presents.
Hugs