We have a live in junior nanny but she only works 3 days a week, works from 9-5 whilst and DS sleeps from 12:30-02:30, I wake him and she takes over at 3 once I prepared the snack as I'm 100% WFH and it's all very flexible, so actual time with DS is about max 6h, usually less. There have been days where we asked to help out until 6 if work was super busy but that's rare.
No cooking, no cleaning required, I do all of that. She gets £50 a day, £150 a week + I cook a nice meal every evening and she eats with us, basically the same rate we pay the childminders. My friend hired her and pays her £10 an hour as a live out nanny & she teaches two kids her native language locally which she gets £50 for for two hours.
She was an au pair before in New Zealand for 12 months - 3 children, 3 months, 2 & 4, after that she was an au pair, then she was an au pair again in England for a 3 months old for 1 1/2 years (obvs the children get older whilst she's there) + 4 teenage kids.
She then moved onto the junior nanny role with us but has a large double room, I cook a nice family meal every night for all of us etc and we're all very happy with the situation. We chatted about money very openly beforehand. As I am pregnant, we decided it's best for her to leave mid /end of February to find a full time live out nanny role because she's very able and I personally think that's best for her and us. I won't need full time care and done need someone in the house 24/7 as I'll be at home and also need the extra space.
She even said she'll probably worse off given that she will have to rent a room in London which is probably going to be £700-800 + bills, she loves food (same as me and we spend a good £500 on food every months for 3 adults and a toddler) + she'll have to travel to work.
I know I'm not paying her loads of money but this was discussed beforehand and we were all happy with the situation and still are, get on really well. It's been a good and happy experience for all of us. DS will move to the childminders 4x a week rather than 2x a week from when she leaves. She knows that once she's gone, we would love for her to help out with babysitting etc whereas then we'll pay her the standard hourly rate given that she's no longer live in.