The series of events didn't make sense but what I saw still perplexes me years afterwards..
A man is getting dressed and leaving a bedroom after what seems a one night stand. The woman is still in bed and drowsily asks the man to turn the heater up because it's so cold. He not only turns the portable heater up, he places it right on her bed and under her blanket. Unaware of what he's done, she thanks him before she falls asleep. As he leaves her apartment (flat?) he looks over his shoulder briskly to see flames flare up through a window.
There's some zombies ... I can't remember what happened, I was very sick.
I woke up to see the end. There was that man from the previous scene and a bigger man with him. I think the bigger man had a shovel. They were looking out to the horizon at dawn. It looked like they were on a mountain or cliff maybe?
I saw this movie in the late 90s I believe. I think it might've been Italian or at least European. Either it was dubbed or the Nyquil I took was making me really loopy.