I would rather stay safe. see link below, posted earlier, might help.
http://www.expatwoman.com/forum/topic228434-excellent-housekeeping-service-not-a-shill-regular-poster-here.aspx
http://www.expatwoman.com/forum/topic240060-parttime-housemaid-woes-where-am-i-going-wrong-forum42.aspx
hello,
I had a bad experience with one , the manager is not professional and in 3 months, she have changed maids 4 times, I've notified that some maids are working under visit visa which is illegal and I have informed her. Tips: do not hesitate to ask copy of the passport and Emirates ID of the maid+ signed contract from the maid agency. This week when my husband and myself where out of the country, she wanted to send us AGAIN a new maid without seeing her. The price is 100 aed for 4 hours, but this agency is full of troubles, I prefer pay more and have always the same maid. Please, if anyone can recommend me a serious maid agency it will be great. Thank you very much.