I was in that hotel about 5 years ago when I first went out to Ibiza.
The rooms are nothing special and when I was there, there was no air conditioning, which was an absolute nightmare in the middle of August.
I'll never do Club 18-30 again as long as I live, we were made to feel like lepers because we wanted to go to Cream ahead of their "booze cruises" and 80's Gold nights. I suppose if that's your bag though, then it's lively enough.