Police are searching for vandals after six large window panes at the Villa Marina were smashed.
Officers have branded the damage "appalling and disgraceful" - it happened at around 10pm on Monday.
They're now asking parents to keep a closer eye on their children saying there's been an increase in "unruly teenagers" in the area in recent weeks.
Those responsible have been warned they'll be "dealt with robustly".
King Charles has arrived at Tynwald, in his first visit to the Island as monarch.
Government public counters closed because of king's visit
The government says public counters at its main offices in the capital will be closed today.
Reduced MER service as Island braces for King's visit
The Manx Electric Railway says it's running a reduced service today.
Public Health issues advice on staying cool in heatwave
Public Health has shared advice on how to keep cool during the summer heatwave.
Keys to sit after royal visit this afternoon
The House of Keys will sit this afternoon, following a royal visit to Tynwald.
Bus services to divert for king's visit
Bus Vannin says there's a royal reason behind some of its services diverting today.
Next to stay open after new deal reached
The Island's branch of Next is going to stay open, as a deal with the shop's landlord has been reached.
New Laxey Wheel visitor centre opens doors
Manx National Heritage is celebrating the opening of a new visitor centre at the Laxey Wheel.
