The city is experimenting with completely exposed, eco-friendly urinals.
However, these features have done little to calm the ire of local residents, who have written to the town hall in protest.
"There's no need to put something so immodest and ugly in such an historic spot", local store owner Paola Pellizzari told Reuters.
This urinal is located next to one of the islands most attractive townhouses, the Hotel de Lauzun, where the 19th-century French poet Charles Baudelaire lived.
Ile Saint-Louis locals said the receptacle, with no stall around it of any kind, could blight their ultra-chic neighbourhood.
The urinals also happen to be within 22-yards of a school, a bunch of businesses and the iconic Notre Dame Cathedral - a factor which has caused even more anger from locals.
"I like it but putting it here is a bad idea", said Gregory, a 43-year-old photographer who has been living on the island for the past three years.
The designer said it offered an eco-friendly solution to the problem of public urination.
The device is essentially a box with an opening in the front and a floral display on top, containing straw which transforms into compost for use in parks and gardens.
"If we don't do anything, then men are just going to pee in the streets", Weil told Reuters. It's destroying the legacy of the island.
But Paris authorities have insisted the devices are necessary. Paris authorities have rolled out four of the stand-up loos in spots where public peeing has been a problem, and a fifth is planned.
"If it is really bothering people", Weil says, "we will find another location".
Some people are even criticising it because they feel the urinals are discriminating and are made just for men, forgetting the inconvenience faced by women.
In case they weren't already problematic enough, some have even described the urinals as discriminatory, with French feminist group Femmes Solidaires arguing that the public space has be transformed to suit the needs of 'men who can not control themselves'.
Public urinals, or pissoirs as they're known in French, have a long history in Paris, dating back to the late 1800s when they were installed for men traveling to and from work.
"It's a little weird. but if you need to go it's better than going on the street", admits Jonathan, a tourist from NY who examined the rectangular facility with plants growing on top, which offers little or no privacy to those looking for roadside relief.