Great sleep boost & top-notch customer service
Product: The device made a noticeable improvement in my sleep (15% better WHOOP recovery, the most impactful thing I've ever seen for me). It saved my hot summer, but even on normal-temperature nights, I definitely sleep a lot, a LOT better with it. For extremely high temperatures (I had 35º C/95ºF with high humidity in my bedroom some nights) it might not reach the lowest temperatures advertised (15ºC/59ºF), but it was still a life-changer. Besides, they have local warehouses: if you live in Europe like me, you don't have to add shipping and import fees/tariffs like on some of their competitors (at least, I'm thinking of Sleep.me, not 100% for sure, though).
Customer service: The support team was impeccable: extremely kind and understanding, technically helpful, and super fast (once they replied in something like 10 minutes). Because of financial problems, I had to return my unit, and they smoothly provided the pre-paid return label (this is important: I've recently returned other companies' devices during their "risk-free trial" return window, but I had to pay the shipping. Not so with HydroSnooze—the trial was truly risk-free).
Summing up: HIGHLY recommended.