If your suits faded out from the swimming it probably was the chlorine. Lots of places shock their pools with chlorine to handle the heavy swimmer load when the hotel is full. There really isn't a no peeing section of the pool. Hotel hot tubs are a real nightmare of nasty stuff. After a 20 minute visit in a hot tub an adult usually sweats a pint. Sweat is almost identical to urine. Amazing how many people sit in a hotel hot tub. Happy soaking.