1. Participate enthusiastically in the activities organized by the hosts and even if the local History Museum is the least interesting place on earth, go with a smile! The hostess has put a lot of effort into making your stay a pleasant one, the least you could do is hide your lack of interest.
2. Repeatedly offer to help: "Where are the plates?" "I would like to help."
3. Before leaving the bathroom, rinse the shower or the bath. Everyone cleans up after themselves. This is the first thing learned by the sons of great ambassadors and presidents in the very, very chic Le Rosey school in Switzerland!
4. When you leave, take off the sheets and put them where indicated.
5. During the week or 48 hours after, write a postcard thanking the hosts for their company during your weekend trip. This is the famous "thank-you letter". One is written even if you were invited to sleep in a caravan!
6. And of course... you must ask permission before going into the kitchen and having a look around the fridge!