Simple HK couple seeking for domestic helper

We are looking for a loving domestic helper to be part of our family who can take care of our beloved  children ( 2 yr son and 1 newborn). We are a total of 2 adults and 2 kids, no pets and no senior, living in sha tin area (800 sq ft)  Main tasks are baby care, simple cooking and home cleaning , no need to send children to school, marketing or washing car. But she will need to share room with my 2 yr old happy son who sleeps well at night :)