Two North Perth residents voiced their disappointment in the choices.
One man said they were more suited to a festival or construction site than a community park frequented by children.
Several members of the public gallery applauded his comments.
Vincent Mayor Alannah MacTiernan agreed that more effort could have been put into finding appropriate options.
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READ NOWCouncillors voted to install the unisex toilet in May despite opposition from residents.
Objectors were concerned the facility would encourage anti-social behaviour and overcrowding of the park and waste taxpayers’ money.