The music is great, the pool is very large and goes up to 12 ft. We went to a pool club earlier in the day and found out we had to pay to use a chair but Blu Pool has plenty of chairs. No cover if you're staying at Bally's. The best part was the fact that they have a drink with Nerds in it! My favorite candy! Along with cherry vodka and red bull, it was delicious.
My ONLY complaint: no hot food. I was craving some French fries bad. They did say we could bring food in from outside (there's a Nathan's and a Johnny Rocket's inside in the hotel food court, a one minute walk from the pool entrance).