I wouldn't do it unless you have very private areas outside. Most freezers have very simple keys that aren't for stopping theft, just for stopping little kids from getting in I think. What if somebody opened it and put something dirty inside as a joke (like a dead bird)? I think a sturdy balcony is OK, especially if it's shady. It might be OK in the shed, but to be honest then it's a lot more work for you to get to your food. Like you want a pound of beef and there's a thunderstorm outside. You'd have to walk outside with umbrella, unlock the shed, close umbrella, dig for the meat, pick up umbrella and lock shed while holding onto cold meat, then walk back to your house. If possible, keep it close to the kitchen. Do you have any space in the garage or basement?
Mom to 2 beautiful autistic boys (13 & 12)