We recently started using this company to clean our home:
The rate is 350/hr, for say weekly cleans they require you to hire them for a four-hour block. The cleaners are all Taiwanese citizens. They can give you a receipt (收據). They do residential and commercial cleaning. Their cleaners have to take classes. I’m happy with our cleaner, she is very thorough and a good organiser. But, it’s hard to recommend companies because each cleaner within it is different.
There is a lot of information on the site but it’s all in Chinese.
We used another, more expensive company in the past and they arrived like ghostbusters with all kinds of equipment and three cleaners, but we finally dropped them because they still managed to miss dust on the floor, and left us feeling a bit exhausted by the visit.
Hope that information helps.