Ive been to Spa World (on the guy's side). Its a nice spa and the big pools are absurdly relaxing.

That said I've kinda cooled on Spa World recently - there has been a significant influx of overtly expressive PDA in the public bathing areas. Im not a big fan of open PDA - be it heterosexual or otherwise. In addition, from what I have been told, apparently the police were called out to SW in the past week or two owing to a groping incident involving a minor.

On top of that Spa World has gotten very, very popular and the bathing area / sauna room loads are so high that its becoming quite unrelaxing.