Many moons ago I was at a student flat booze-up where we'd all come from various parts of the country, so were divided up into boys' room and girls' room for communal slumber.
One of the blokes had OSA and it was among the worst night's sleep I'd ever had. Given how legendary my drunk dozing ability is(I've been thrown out of most nightclubs in Edinburgh for having a wee nap in a 110db corner) and the fact I was indeed a wee bit squiffy, you can be assured it is not a pleasant sound. It does in fact give you the aural impression that you are an ear-witness to a murder by strangulation. Then he'd wake up and tilt his head enough to breathe, fall asleep, then you'd be ear-witness to another murder by strangulation. Then another. Then another.
The fella himself woke up bleary from hangover but otherwise rested, amid a room full of zombies. We asked his girlfriend(who'd been in the other communal room) how she ever got a night's sleep.
The couch, was the answer.