There is on called Jungle Mania in Taoylors Lakes that ok, but a better one n East Keilor. Forgotten the name though! Jets in Gisborne is mega hot on a hot day, so not worth it if temp over about 25.

Eta you call alo have lunch at Vic Tavern in Gisborne- it has a play room, or Taylrs Lakes Hotel - in the Warergardes complex.