Knowing that we'd be visiting in the midst of summer, we specifically sought out hotels that offered air-conditioning. Carat Boutique was one of those hotels, but we should have known something was up when we walked in the room to find a lonely oscillating fan in the middle of our "air-conditioned" room.
No matter how we adjusted it, our AC didn't want to push out air that was anything but marginally cooler than the 35 degree weather. We told the front desk multiple times, and they just insisted it "should be working" without checking or offering a replacement room. We spent two sweaty nights sleeping in our underwear on top of the sheets.
Though it wasn't all bad (the location is excellent and the drink bar/breakfast amenities are also good) and our friends who came on the trip and stayed on other floors (we were on the top floor and thus getting the full brunt of the sun) said their rooms were much cooler, I'd suggest anybody thinking of traveling in summer either A) confirm their room is not on the top floor, or B) look elsewhere.