I haven't stayed in one, but heard they are around $700 per night. They have a parlor on the first floor with queen sleep sofa and full bath. Loft upstairs has king bed and full bath. They get Club Level services.
We stayed in one several years ago. I don't remember the cost but the cottage was awesome. It will sleep up to 4 but is only practical for 2. There is a sleeper sofa and a 1/2 bath down stairs in the living area and then a open loft style master bedroom up stairs with a full bath. So all guests have to share the upstairs bath for bathing. Allears.net recently wrote a blog on the BoardWalk Resort with pics of the cottages. You might want to check it out.
This is a link to all photos of the cottage when we stayed there a few years ago.
There are two types - loft and non loft. We had a non loft unit.
You have conceirge club that you have to walk to (it is basically right above the cottages) but it only took a few minutes to walk there. We didn't mind.