Looking for friendly, dependable helper yaya (start anytime mid Sept)

We're a British Chinese family with 3 kids -- working couple, 6 YO, 1 YO twins (twins have their own wonderful helper yayas looking after them).   We're looking for a 3rd helper to join us -- mainly to cover housework, cooking, and taking our 6 YO boy to activities near home -- to replace one who will be finishing her contract mid-Sept and needs to go home because of eye complications.

We're looking for:

- more of a responsible housekeeper we can entrust our home and family to, rather than just a maid.
- honest and friendly live-in yaya who loves kids (even though it's mainly general housework duties)
- good and tidy cleaner who takes pride in her job
- someone who can cook (preferably Chinese Western, but we can also teach you)
- someone who can work with our 2 other helpers - who are lovely ladies always willing to help each other out
- someone who's not always busy on the mobile phone pls :O)
- no smoking, drinking or outside debts

About us:
- Friendly Christian family (we're a working couple)
- Nice tidy environment
- share room bathroom with other yayas (though right now both of them are sleeping w/ the babies at night)
- Flexible day off
- Located in Happy Valley near Causeway Bay