Cottage courts are to Cavendish as 19th-century inns are to Vermont, or B&Bs are to England -- they're everywhere, and they vary tremendously in quality. Be aware that many of these cottage courts and motels are more interested in high volume and rapid turnover than personal attention to guests. A number also believe that hanging a straw hat or two on a door allows them to boast of "country charm," even if they have anything but charm.
If you've arrived in town without reservations, check the board at the visitor information center, which lists up-to-the-minute vacancies. You might also find a great deal (people do) by asking local residents about under-the-table rentals; checking local bulletin boards at Laundromats and general stores; or browsing free local "shopper" newspapers. Certainly can't hurt. But it takes time and energy.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.