Freezer bodies are bloody difficult to manage. And have you ever tried to cut a frozen chicken? Hypothetically, in a busy apartment block with little privacy you need to be creative. Either a brine solution, or a salt/sugar curing with enough liquor to submerge the body would be an option, depending on the end use. Basically, you're pickling. Noilly Prat is good, but gin or vodka control the putrefaction better. You need access to large quantities of liquor and a way of disposing of the bottles without creating suspicion. With the right recipe you can manage the "what is that smell?" period that usually leads to an awkward visit from the cops. The body will desiccate, be easier to re-size, and re-locate, and you can easily dispose of the liquid which, when sufficiently diluted, is forensically not too damning and wont destroy the plumbing. You might need to pepare a few fresh baths, as the solution will become diluted. Give it a go, you'll be amazed at the results.