The Venice float lab has 2 chambers where you can meditate in an isolation tank for 90 minutes for 40 dollars.
Float Lab builds immersive environments that eliminate all outside influence. The chamber dimensions are 4W x 7H x 8L. Inside is a ventilated enclosure with additional oxygen being provided. It contains 12 inches of solution consisting of 1000 pounds of Epsom Salt and approximately 200 gallons of water, which is then heated to 95 degrees [external body temperature]. The solution is maintained by utilizing UV and Ozone technologies as well as other advanced components that provide the ultimate purification system. Once the body is suspended in the solution the brain is no longer required for gravitational navigation or external input processing.
Turbo Sonic® patented technology accelerates the body’s natural healing response, increases cellular oxygen circulation, enhances cellular nutrient uptake, stimulates fluid movement and facilitates cellular waste removal.
“The standards are those we have found necessary for reliability of operation, for safety, and for maintenance of a hygienic environment. Low cost of operation and safety are favored over low initial investment; if a more expensive item meets our standards and decreases the cost of operation we use it rather than a less expensive item that may be less reliable, unsafe or costly to operate in the long run (one year or more). A cheaper item may end up generating far more cost in terms of unreliable operation, redesign cost, time spent on its maintenance, anxiety over its unsafe operation, and its potentially unhealthful effects on persons using the tank.” By John C. Lilly, The Deep Self
The natural hot springs (even some secret 
