We have a block of rooms blocked off at the Grand Superior Lodge under Frankiewicz/Ziegler for 12.27 and 12.28. This one is easy peasy - you'll be about one hallway away from the reception. Our GSL contact for lodging is is listed.
GSL also rents homes and cabins - these are on the same property and can be booked through the website listed below. These are great if you want to get together a few families (or for us, where there are extra bedrooms for when you kids drive you crazy and you need to give yourself a timeout). The houses and cabins also have full access to the pool and other facilities in the Lodge.