Turks & Caicos is beautiful.

And that's an understatement. Grace Bay beach is often voted among the best beaches in the world. A hotel 2 properties down from Beaches was just rated one of the top 500 hotels in the world - partially due to location.
The beach at Beaches sometimes seems crowded - 3 or 4 lounge chairs deep- but there are also a lot of family activities so perhaps that makes up for it. I bet you've never seen water this clear. It's amazing.
The island is small with limited shopping or dining options but there are some neat places to explore. Not really within walking distance so would require a car or taxi. If you want dining recommendations, let me know but with Beaches you probably don't need them.
I would definitely recommend visiting Turks and Caicos!!