What is an acceptable room temperature can vary by local customs and I find often the staff can be dismissive that it's as big a deal as it is for me. For example, at the Ren Beijing Capital, with the AC on the coldest setting / highest fan all day, one part of my room was 26.5 degrees C and the other 21 degrees C. For me (Canadian), this is way too hot (constantly sweating), and it also happened to be hotter in my room than it was outside. The duty manager said this was "OK for Chinese" and seemed to think that was sufficient to mitigate my concerns. I very happily changed to JW Beijing where my room could make it to 20 degrees.

10k sounds low but it's probably better to avoid the hassle versus pursuring.