It’s many years since I’ve been and the only times I did were with work (we took our kids to one function - they were young at the time so didn’t notice the squalour) My guess is that they’ve probably not spent a great deal on any regeneration programme.

By the time you’ve done everything you’re probably better off (financially and emotionally) to book a weekend at Alton Towers/Spash Landings and stay at the hotel there