While I was still in company accommodation, in a tower on SZR, a few years back, one of the cabin crew decided it would be a good idea to pop out for a few minutes and leave the chip pan simmering away. The ensuing fire pretty much wrecked their apartment and, of course, set off the fire alarms. By the time I had walked down the (huge number!) of stairs to the ground floor the fire service had already arrived- I reckon it took them less than 10 minutes from when the alarms went off. They had the fire out in less than 5 minutes and we could re-enter the building before I'd even had the chance to buy a Starbucks.
Pretty good effort I reckon. I believe the cabin crew member concerned was invited for tea and biscuits with the management and had to pay for the damage.