The hotel's located in Stavoren, a formerly bustling port that one might actually call "tired", in the northern reaches of the Netherlands. It's pretty, but you came for the wine barrel hotel rooms... you lush.
Before they were fancy hotel rooms, they were vessels for fancy wine at this Swiss winery.
Now, they're built into the main floor of an overarching hotel structure, and the 14.5k liters of vino have been replaced by a front door, two porthole windows, a pair of twin beds, and room enough to stand in the middle.
Because the barrels are literally built into the actual hotel, they exit into a space that's got a normal-dimension bathroom and a super classy-looking sitting room... because without all that additional stuff, you might get sour grapes.