We stayed at Belizean Shores in January and think it's an excellent choice for north of town. There are a number of photos of Belizean Shores, both the interior of our unit and the grounds, in my ShutterFly collection.
http://fredasphotos1.shutterfly.com/action/
Go to the bottom left of the screen and click on "Belize 2006" (the featured collection is for the May trip, named "Belize May 2006").