The Condo itself was fine for a short stay. It could have been cleaner, the dishwasher doesn't work, the provided toiletries were poor quality so we were glad we brought our own, the washing machine knocks loudly the entire cycle regardless of if there's 2 towels or a full load, but it worked for our family of 5.
We have visited Sandy Beach Resort 5+ times over the years. This was our first trip in about 6 years and it was so disheartening. The security staff is insanely rude, you're given bracelets to wear for pool access but no one monitors it so we watched multiple groups of people come in off the street, enjoy the pools, and then leave and walk to other resorts, there are 3 elevators for the main/tall building and our entire stay 1-2 were constantly broken/out of order; we met a family who was stuck in one of the elevators for over 2 hours on one of the days and there is NO phone access in the elevator. The pool towels are barely bigger than kitchen hand towels. The pool tiles are broken/busted and need to be replaced in every pool/hot tub and the lazy river. They lock the beach access gates at 8-830 each night even though the pools and beach are open until 11, so you have to walk out to the street in front of the condo and go around to the public access (not a lot of fun with 3 small children).
Overall we love Myrtle Beach, the lifeguard on the beach was very nice and informative. We'll return to MB but NOT Sandy Beach Resort!