We visited the Club Med Eleuthera, courtesy of new friends who invited us for lunch. The grounds were clean, although not very creatively arranged.
Most fun for kids is the circus school, where they can learn flying trapeze and other circus arts. I think that now this Club Med is adults only, but they have retained the circus area.
If you stay at the Club Med, do try and get off the grounds sometimes. Club Med is a great budget resort because all your meals are included, as are all your activities. But be sure to actually see some of the island while you''re there. It''s easy to rent a car or taxi to take you around.