My personal etiquette with cleaners:
First meeting - either set expectations on what you want them to do and show them around. They should then give you a quote for the time required to do the job. Or ask what you think they can do in 2 hours. Don’t assume 2 hours for what you want them to do is sufficient - they are the professional. Compare with your friends’ experiences or get other quotes.
If you want every two weeks‘ kind of arrangement - bear in mind it’s harder work for cleaner to clean two weeks’ worth of dirt so allow for more time
References are essential. Mine was recommended by my neighbours and I felt okay leaving her in the house very quickly. Wouldn’t necessarily do that with someone I got from gumtree without references/recommendations
Yes to the key - see above
Some cleaners prefer certain products. It is courteous to get them what they like to work with unless you have specific products for items that require them (furniture that can’t be cleaned with detergent etc). My cleaner likes to use micro fibre cloths and doesn’t like bleach based products. I respect that and get her what she needs.
Replenish products regularly and ask her to let you know if there is anything that’s running low
I text my cleaner often to say thank you for making the house looks great when I come back from work - she told me she loves that her work is valued and it makes her work harder for me
Bonus and card at Xmas
Don’t chop and change time and day without sufficient notice - some of my neighbours do it and I think it’s bloody outrageous
Don’t be a CF and casually ask for all windows to be cleaned one week as an add on
Communicate swiftly and politely if something doesn’t work for you like something not being done properly or not cleaned the way you want it
Don’t leave valuables or random cash lying around. Not because cleaners steal but it can make them uncomfortable/nervous - my cleaner told me this. It makes sense. Either because they feel tested somehow or the fact you don’t look after valuables and something goes awry they can be accused of being the culprit
Importantly - if your cleaner fires you, ask why, ask them to be honest and prepared to deal with the honesty like an adult. Then learn from it. I’ve had a friend who couldn’t retain cleaners. Finally she asked as she was driven demented and she found out her house was so messy and neglected they didn’t want the bother - they could find work with people who cared more. Now she has a cleaned twice a week.