We (myself, husband and 17 dd) have booked a house in Scotland for 3 nights. It has 3 bedrooms and sleeps 7. It is quite isolated so I said Dd could bring a female friend same age. I’ve let the owner know friend is coming and he said fine but it will be extra £60 - £20 a night. I’m a bit taken aback at that as it says we have rented the whole house. Obvs I will pay it but AIBU to think it’s a bit cheeky? Or am I cheeky to think I shouldn’t have to pay it?