Most expats living in Bali tend to have at least one staff member under their employment. It is sometimes a controversial topic, as in western countries it is very rare to have a maid in your home, and some feel it is inappropriate to keep a servant. That is a very skewed way of looking at the situation though.
For an expat living in Bali a maid’s service can be invaluable, and it also provides a job to a local who may otherwise not have any work. As long as you treat your staff with the respect that any human being deserves, there should be no reason for anyone to think any less of you for employing a maid.