Link is still up and running - must have been a sudden surge of interest that stopped PP accessing it.
Re the council tax scam suggested, if I had enough money for 2/3/4 holiday homes, and was simply trying to save council tax, I'd rather have just one that was a lot more luxurious than a garden shed with bunk beds. How much can the council tax be FFS?
If it is a typo, odd that the owner hasn't double checked their own listing to ensure correct - even without the presumable lack of bookings.