My suggestion.

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Note added at 15 mins (2015-08-18 10:30:53 GMT)
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Massaging waterfalls!

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Note added at 15 mins (2015-08-18 10:31:26 GMT)
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http://www.calvin.edu/~adams/iceland/Swimming/Swimming-Pages...

You could leave "massage" unspoken as it were, as it seems quite obvious to me what the effects of this feature would be. But alternatively you could add "massaging" in if you feel it benefits the description - optional I guess.

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Note added at 35 mins (2015-08-18 10:50:27 GMT)
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"A designer collection of top quality ...... include rainfall, waterfall, CASCADE WATERFALL and intensive massage systems for unforgettable relaxing experience."
http://www.bathroomavenue.co.uk/38-thermostatic-shower-panel...

The Vichy Shower originated in Vichy, France, an area 250 miles south of Paris along the Allier River. Vichy is called the gateway to the Augverne region in central France. This region is resplendent with six geothermal mineral springs that have been used for eons for hot spring “cures” for arthritis, rheumatism, gout and digestive complaints. Vichy continues to be world-renowned for it’s spa therapies. The Vichy Shower itself consists of a “rainbar” that is attached to a temperature and water control box fitted to the wall in a tiled room. As the guest reclines face-down on a spa table, similar to a massage table, the rainbar extends from the wall over the guest to the shoulder area. The six showerheads are positioned so that they cascade over the guests back and legs. During treatment, the Vichy begins as a warm shower that balances, reinforces the immune system and relaxes the body. After three minutes of this luxurious shower, the therapist performs an alternate hot and cold therapy shower that oxygenates, detoxifies and firms and tones the skin. Due to the action of flushing the lymphatic system for detoxification and the contracting and relaxing of the skin for firming and toning, the Vichy Shower can produce results as very few therapies have the ability to do.
https://www.woodhousespas.com/blog/2012/09/20/vichy-shower-f...
Many of our body treatments are combined with a cascading rain shower, which is called a vichy shower.
https://vimeo.com/13863909

Your journey begins with an invigorating full body scrub, using a richly scented salt or sugar scrub, and is followed by a cascading vichy shower.
http://www.wintergreenresort.com/Body-Treatments-and-Wraps/

Body treatments take place in our wet room under a relaxing Vichy shower.
http://bodysoulspamyrtlebeach.com/spa-services/body-treatmen...

therapist will apply nourishing body products to promote smooth fresh and healthy skin. These will be gently removed with our six-head horizontal Vichy Shower, sending water cascading over the entire body - See more at: http://www.edenstreetspa.com/viewpage.cfm?pageID=37#sthash.v...
http://www.edenstreetspa.com/viewpage.cfm?pageID=37
https://www.google.com/?gws_rd=ssl#q= "vichy shower"

Featured at most mineral and thermal spa baths throughout the world.

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Note added at 2 hrs (2015-08-18 13:12:09 GMT)
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https://books.google.at/books?isbn=812072447X