Family accommodation in southern Maine


we're planning to fly to Maine next year (again :-) and are looking for some nice places to stay. They should be on the southern coast and not too pricey as we are a family of four (two children, one of whom will be about one year old then) but light and clean and not too far from the beach.

We have already stayed at Kennebunkport and Old Orchard Beach. We liked both of them very much but we would also like to try something new. Have you tried out great places you would like to share with us? Your advice will be highly appreciated!

Thank you!