Certainly hotels have some sort of refrigeration where you could keep the
ice pack until needed. Since the
hotel is air conditioned I assume the plumbing is up to date .... the water in the toilet tank is usually cool so all you need is a waterproof container ... many things have been submerged in the toilet tank to keep cool ... LOL. It works though. I really think if you found a rather thick styrofoam container (small as possible) the temp.