Wat Srakesa is where I think I was - and the outside photograph indicates - but it is not clear from the images.
There are a number of Wats in the area around the Golden Mount and this was one of them BUT the Golden Mount is also referred to as Wat Srakesa. Looking carefully at the Google Map there are 3 smaller temples at the base of the Golden Mount so this maybe one of them?
It was a Wat which was well looked after and was popular with Thai people coming in to worship and there were a handful of tourists.
It is certainly worth visiting this area.
Please act with respect when entering Buddhist Temples.