The Spa, which operated in Kaiafas was one of the most famous and, when, the railway line was built in 1907, it started operating more systematically. The water gushing hot in some spots and cold in other ones combined with the sulphur is recommended for several conditions of the musculoskeletal system, skin diseases and chronic respiratory problems.
Within close distance from the cave, where the spa is located, there is a spring, whose water is only suitable for drinking and not recommended for swimming. It has therapeutic properties for diseases of the liver, the kidneys, the bladder and the gallbladder.