We stayed at both Four Seasons resorts last year and the resorts and staff were amazing with our 1 yr old son. We only wish he was older as the Kids Clubs looked good enough for even us to hang out for the day.
In both resorts we had the beach villas with our own pool. Better than the over water when littles ones are running around. I know they are built safe, but it was a peace of mind for us.
Hope this helps.