I agree, it is not for all, but if you are adventurous it is the way to go. In every port, when the ferry arrives, there are a number of people with signs saying: rooms or cheap hotel. You might get it with or without a bathroom, with or without a shower, but there is always a taverna downstairs where you can meet the locals. Remember: "Calimera" is good morning and "Calispera" is good afternoon and good evening.