St. Augustine is the newest phase, and it was recently refurbished as well. Great villas, a marketplace and fitness center on the ground floor of building 25. Also has large pool with interactive pirate ship for younger kids, and a water slide for older kids. There is also a pool bar for the adults! Bella units were recently renovated, but I don't think they're as modern as the other phases. They have a large pool with an interactive fountain and zero-entry for little ones, as well as the main restaurant and a pool bar. But I would recommend St. Augustine first.