How much would you expect to pay for this please?

[TheReplacement]

19yo niece is staying at our house for a fortnight while we go away, minimal expectation to do anything other than stick a couple of sachets of cat food down a couple of times a day and maybe a bit of plant watering.

Didn't need her to stay over as her cousin (my DD) and her Mum would be nipping in to empty litter trays etc, the idea was to give her and boyfriend the chance stay together as they are usually in Uni 150 miles apart.

I will stock the kitchen with snacks and booze but how much should I pay them?

I’d give her £100

I don’t pay DS’s girlfriend when she cat sits for us. I take her shopping with me and she chooses whatever she wants, then can use anything already in the house she likes too. I buy her stuff from duty free so she has presents when we get back!

No payment. Bring her a token gift back from the holiday.