I normally don't have difficulties sleeping in, and normally don't wake up.
But for the last few weeks it was harder to sleep in because I developed a tinnitus, which through treatment now is better at least, and now it's getting back to normal.
Usually I don't wake up during the night. But when I get to sleep longer I would wake up in the morning, about the time I normally should get up, and then sleep in again.
Usually I'm awake before the alarm goes off. It's really unusual that I sleep until the alarm starts.
I rather sleep like a rock, but for some funny reasons usually wake up when the door bell rings. The bell at my flat's door is really loud, so no wonder about that, but the other bell from the intercom is rather low, but still it wakes me up. But that's ok since it usually is the mailman and I want my mail
I've no problems sleeping in when I'm elsewhere as long as the bed, couch or whatever is not too uncomfortable. So I can't complain.
What I hate is that when I have to get up earlier than usual I will wake up several times during the night and having difficulties to sleep in again. Same happens when I've got something to do the next morning, like writing an exam, giving a presentation or travelling. That sucks.