I have to confess that this is one of those subjects I missed the chance to get early pics of and, unless they’re buried away on film, don’t have anything to show of its appearance prior to refurbishment, and offer as potential business premises.
There are pics online showing the building as it was, with FIVE doorways opening into River Street, but two were filled in (these lay in the section between the current centre and left-hand door), and windows added to the facade, which would probably not have been too popular if it had still been public toilets.
I recommend looking this up in Google’s Street View, which shows it as far back as 2008, and even caught it while work was underway, which seem to have started in 2023.
It took ages for this clear view to happen, with no parked cars, to coincide with one of my passes.

The rear didn’t escape the developer’s attention, with some nice patio doors added, and a balcony to stand and admire the passing River Ayr below.
Spot the intriguing electrical box just visible on the left.
This is intriguing as it looks like a street lighting box of the time, but is BEHIND a wall in River St (just visible on the right in the above pic), leading me to wonder if it was used to provide power to the toilet building.
Viewed from the New Bridge, the area behind the wall is level with the road, but has no access, and was previously often full of overgrown trees and bushes, now cleared.

I hadn’t really noticed the box and platform before looking at this pic, so will have to try to remember to grab a better pic one day, with a better view.
There are years between all these pics, and this was spotted during another pass.

Had to grab it – given the purpose of this building, the Hulk poster reminded me about a joke that referred to bears sh, sorry, pooping in the forest 😇