it's a superb place, a piece of paradise in the gray and wet St. Petersburg. there is a playground for children, so you can come with them and they will have fan even if they can't swim in the big pool. if you come on a weekday, you won't be waiting long (usually 10-15 minutes), but on weeknds you will stant in long lines.
bathhouses are perfect, especially the roman bath and the turkish one.
The pools are all good!!
water park staff is kind.
you won't regret coming here