I hired all my helpers from this agency. I can't say they are ALL capable and pleasant, but they/the agent are at least honest about the helpers, their strengths and shortcomings. I would say they know the helpers quite well, and those who they don't know that well, they would be honest about it. I have interviewed a number of their maids, and I have seen more than I like than dislike.
But recently there is a shortage of local helpers, so you may need to hire fromm overseas. But I know for sure that the agency is run by an indonesian chiense family who flies back to Indonesia etc to see the helpers for themselves.
Will PM you each in case you still need their contact.