Eat as much as you can first time around. Seconds are seldom offered. Do not ask to use their refrigerator, stove, or microwave. We were soundly scolded for each attempt. If the host tells you the rooms are air conditioned, make sure you ask specifically for electric air conditioners.
Some owners believe open windows or fans are the equivalent.
If you ask for directions and they tell you finding the place is a snap, be sure to buy a detailed map of the area. You might as well stay at the local Holiday Inn. If the owners tell you the rooms have historic charm, it means the rooms are small. Someone could write an orchestral arrangement with the creaks and moans of these old houses. I hope you like muffins.