I'm sorry things didn't work out Gibby, but keep your head up. Just think, it's only one more year and then you never have to worry about it or deal with it again!

Less than a year even, because you'll probably be finished in June, right? It will fly by if you just try to stay positive. Don't be embarrassed about the lecturers, if they ask just say it didn't work out and leave it at that. It's none of their beeswax, and you have nothing to be embarrassed about. Plans change all the time.
I'm sorry you have to deal with so much disappointment, but in the grand scheme of things, it will be a blip on the radar and nothing more. Just get stuck in, do the best you can, and keep in mind that it's only a little while longer.
As for the landlord, well, there are far too many of those in the world. But stick to your guns and hopefully she will see the light.
Good luck with everything, and I hope you feel better soon. Hang in there!
ETA: My friend's granny always says, "Oh hen, what's meant for us, won't pass by us." I like that way of thinking, and I have to say I agree with it.