UPDATE
After continuous nights of romping upstairs, I put a note in their letter box!!
Said the note, "Please, either stop having so much sex or fix your squeaking bed." And no, I didn't sign it.


Dear people in the room upstairs,

By my watch you have been having sex, on and off, since 7pm and it's now 10.07pm. Now I don't know what kind of drugs you're taking or how you're going to walk tomorrow, nor do I care, but please, for the love of God, would you fix the squeaking bed?!

Warmest regards,
Ellie

PS. You do this every night and I'm not sure how much more of that squeaking bed I can take before I lose my mind. And I quite like my mind. Spare a thought for my mind.