So my leaking toilet turns out to be a way bigger deal than just replacing the floor seal.
No, apparently, the floor underneath the toilet is collapsing and/or rotting, making a new seal pretty much useless since it won't properly seal anyways, and the toilet is moving around and not even properly secured to the floor.
So it's looking like they're going to have to tear out the floor in my bathroom, possibly replace the toilet and the water line that feeds it (because apparently it doesn't turn off completely either!)
Fuck. People. That. Renovate. Their. Own. Homes. They rarely know what they're doing, save money by cutting corners and disguise a thousand dollar problem until it becomes a several thousand dollar problem years later.
Christ, I could live without a toilet. But the unimpeded smell of the sewer lines is not something I can live with. No way I'm going to take a shower in a 7x7 room that's filled with sewer gas.
At least I'm not on the hook for the bill. On the other hand, my landlord is about 2000 miles away so the hopes of this getting done expediently are slim.
Word to the wise for renters: when the owner says that they "don't normally hang out" in the space you're renting, be wary. It generally means they don't have the slightest clue that problems are coming and the problems that are there have probably swelled in size to become major fucking problems.
On the plus side, if I completely lose it, I can just vent sewer gas into the downstairs and blow all the spiders and myself to kingdom come.