It was at 02:30 on Thursday night that the rescue service and police rushed out to Frösakull after an alarm about a fire in a bar on the beach.
The kitchen and parts of the porch were then on fire - an incident the police classify as vandalism.
No one was injured.
But for the owners, the event is a personal disaster.
- We have invested everything we had, says owner Sami Simsek.