they do have a toddler's zone that you can try, however, since it was next to the adventure zone (for over 4 yrs old kids) I did not get to try it, as I knew my son would want to go over to the big kids section & it would cause more stress than pleasure for us.
If interested, you can also go shopping by the free shuttle bus that the hotel provides to go to a couple of malls. Check with the concierge for schedule.
You don't have to bring your own beach toys if you don't want, as they have set up a big umbrella and underneath is an area where your little one can play with sand plus a couple of toy shovels. The hotel provides "fish food" basically old bread etc. that you can throw to the fish in the morning. Beach is rather small, but adequate.
I highly recommend the Italian restaurant in the hotel Acqua, it was very good and I thought pretty reasonable for a hotel chain. Enjoy your stay.