I've been living in Suzhou for so many years. We had tried so many times an Ayi but it cost us more trouble than help. Perhaps we are just unlucky. But after 6 trials - we gave up. We encountered Ayi who thinks "cleaning" is the same as merely "touching" the furnitures. Ayi who thinks that we should support her family's supply for food because cooking oil, meat, cookies, bread, everything were found being taken out, and Ayi's who thinks that the 3 hours working schedule includes her 2 hours travel time from home.
If you want an Ayi that you can rely on, try to get from Hongkong - those Philippine Ayis are good but expensive than the locals. I have friends who took Ayi's from Hongkong and brought in Suzhou. They live happily every after then. I would like to try but I cant afford.