Offering separate room with toilet and shower

I live in a two floors of small town house with small garden. The helper can live in a separated room with individual toilet and showering ( helper don't need to share toilet and shower with us), and new bed and cabinet are provided for the helper.   There are only four people in my family, no pet, no other member. My husband and I are professors in university, going to work every working day. My daughter is 11 years old and son is 4 years old, going to school. They likes to play with helpers. So one of the helper's duties in my family is playing with children.