I went with a friend in October 2012 and we immediately started planning another trip for our families. The beach is beautiful and with the dive shop and La Buena Vida restaurant just down the beach it is a great place for families, We had a 3 bedroom on this trip which worked great for our family of 6. Very affordable especially if your are diving as well (you get a discount at Akumal Dive Shop).
We saw tons of turtles while snorkeling and diving plus rays, grouper, barracuda, and tons of other sea life. Highlight if the trip....watching the sea turtles nest of the beach.