surely, there must be a solution here.
what about making a wee nest on the floor? when i first moved to my new apartment, i didn't have a bed but i took all of the little carpets, piled them ontop of each other, pushed it up against a wall and slept that way for a few weeks, with my pillows and covers. it was cozy and comfy.
do you have a second room you could set up camp in? a guest room or maybe an office? you could always just buy a cheap single mattress and put it on the floor, if so.
my xABF used to wake me up 20 times a night, as he was always getting up to have a cup of tea and a cigarette. i moved into the guest room. that helped enormously.