IMO it's an obvious thing for the adults to check, when a family goes out for a meal, that the doors and windows are all locked (otherwise someone might get in while everyone is out and steal passports cameras cash etc).
Or do you think it was the holiday company's obligation to post a notice stating the fairly obvious: "Lock all windows and doors before leaving the apartment unoccupied" ?
If I were staying in accommodation which had the benefit of outside shutters I would have considered that if they were down that was my security ... I might even have felt secure enough to have left the interior window ajar for ventilation secure in the 'knowledge' the shutter could not be raised from the outside.
It was vociferously denied by those who doubt that it was possible to raise the shutters at apartment 5A from the outside. It was only Pat Brown's video demonstration of it being done that forced the reluctant acceptance that it could be done.
Apartment 5A is an almost perfect example of a petty burglar's 'dream' target.
There had been entry via windows in that apartment block.
One member of staff who has attracted the derision of those who doubt for detailing her experience ... had reported a prowler lurking in the bushes in the dark to her employers.
Yes ... I do believe the holiday company had a duty of care ... according to the statements in the files from employees ... the incidence of burglaries at the complex was common place and must have been known to management.