1. Let them help, if they offer
    I'm not suggesting you make your guests do manual labor, but allowing them to pitch in will make them feel useful, less of a burden, and more at home.
  2. Relax
    Don't stress yourself out trying to make the house look perfect and producing Instagram worthy meals for breakfast, lunch, and dinner; they came to see you and to enjoy your company, so focus on making good memories.
  3. Keep a plunger in your guest bathroom
    I am dead serious about this one. Don't make someone go through the humiliation of asking where your plunger is.