Upon arrival I was told that would have to pay an extra 30 pounds for my wife and 2 children.
There was a mistake on the booking, it was down as 1 guest instead of 4.
I checked on airbnb for the price of the room for 1 or 4 guests, and it was the same.
I left my wife to deal with the situation as i I could see they were just trying to rip us off and had no patience for it.
After i left, they tried to charge an extra £40 per person! Luckily my wife is not an idiot and she managed to avoid any more exploitation.
Be careful when using this place, it is a bargain for the location but the owners are opportunists that will try and exploit you even if you are travelling with your children.