Katarino area is located on a holy spot at the foothills of Rila Mountains, at 2 km from Razlog. The legend tells about a local maiden named Katerina who lived in the 14th century and opposed against the conversion to Islam. The Sveta Ekaterina Church was erected in her memory and the whole locality bears her name.
The mineral water has natural healing resources of the low-mineralized thermal water and proven climatic healing potential of the adjacent southern slope of Rila Mountain.