European hotels opt for natural swimming ponds

As an alternative to the classic swimming pool, more and more hotels in Europe are opting for natural swimming ponds. These ponds offer a greener option, where the water is cleaned by plants and other natural mechanisms.
According to Weekend Knack, this seems to be a trend that is gaining popularity. The ponds are said to be not only more environmentally friendly, but also have a calmer and more relaxing effect.
Whether this trend will spread on a larger scale is still uncertain. The hotels that already use natural swimming ponds do seem satisfied with the results.
This report is a summary based on the mentioned source and is not medical advice. In case of complaints, always consult a doctor or pharmacist.