The chemicals in the pool water are very strong, my Tiffany & Co silver bracelet turned black immediately after swimming for less than 30 minutes, and I've been wearing the bracelet for almost 10 years, I wear it to the sea, many hotel swimming pools, but this is the first time in this hotel, my bracelet was contaminated and beyond repair, which is much more expensive than the price per night there. There was no compensation, only an apology from the hotel. Oh well, be careful if you wear jewelry and swim there.