Respect, I believe this word summarizes everything, respect for everything
Communicate, even if you can read my mind you are not seeing the picture, ask and i will share.
Humans, are funny things, they only see what makes them happy, even arguing.

A few notes on how best I think we should run the whole situation
Basic food will be paid by everyone in equal share, it is 20 euros per week.
Accommodation everyone pay 30 euros a week, you will have own space to sleep in, the kitchen is common space, shared shower.
Personal hygiene and "luxuries" are at owns expense.

Work is a pleasure, its easy to do, for many it will be an experience, you are trusted to give your best as we do with you.
Be responsible, be human ,be yourself, teach us, we will teach you many things.
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When you are sure about your visit, then please make a one week payment which will guarantee your booking. Please understand that unfortunately in the past have had refused people saying "sorry I have someone coming" who then decided to change their minds, this why I ask for up front payment

All human beings are born free and equal in dignity and rights. They are endowed with reason and conscience and should act towards one another in a spirit of brotherhood.