Called up the property manager again this morning, because when we got home we noticed another crack appearing in the master bedroom and this one's pretty big. We're almost never in there with the lights on, so this doesn't bother me too much - but I want them to have the opportunity to fix it if it bugs them.
Also though, and perhaps more importantly, the tyres in the backyard! How did we miss them? Well, they're all buried under the giant bush along the back fence, and when we inspected the property that bush had leaves. Now it's summer and they're all dropping off because of the heat, it's thinned out a bit, and they're pretty obvious if you go peeking into the bushes.
Again, I'm not too fussed - I just don't want to have to pay to dispose of a bunch of tyres that aren't mine, when we go to move out.
Update: The landlord is apparently okay with us leaving the tyres there.