Unfortunately we've seen it. We try very hard not to take anything of value to the hot tub anymore. On a previous trip our friends had a bag stolen. The only silver lining was that the lady that took it had the audacity to carry the bag back up to the jacuzzi area later, WEARING SOME JEWELRY FROM IT! When confronted, she first said it was hers, then offered to give it all back. In the ensuing commotion, the lady slipped away, and wasn't seen again for the rest of the trip. Upon going through the bag our friend realized there was way more stuff in it than she had originally had in it. Soon someone close by says, "I think that's my ring". Then another says, "that's my necklace". You get the idea, the lady had been at it for a while. Any unknown or unclaimed stuff, including room keys and a cell phone were turned in to the front desk.
We've been to Desire many times, and THIS IS NOT THE NORM. But, be aware friends, we don't leave our valuables on the seat of the car when we go into the store do we? Desire is such a magical environment it leads to a lot of trust. But, there are those out there that can't resist taking other people's stuff. Sad, but true.
As to the OP, we're sorry you had this experience, what type of AHOLE takes other peopls stuff!