I am in no strong position to offer opinion, but my understanding is that this situation is Melacha Derbanan, but is not Psik Reisha D'lo Nicha Ley — unless maybe if you genuinely do not benefit from the temperature. If you benefit from the temperature then its Psik Reisha.
I can imagine a crafty person suggesting that you thoroughly embrace and hold the position of the needlessness of the automatic temperature change, by realizing the 'stuffiness' or 'chilliness' of the room — but please don't think of this as justification in anything pragmatic until you consult an acknowledged authority.
Now, if one came from a plane flight to a hotel, and was feeling a sick (that they were exposed to a germ on the airplane), and the controlled temperature of the room was a benefit, maybe it could be considered allowed — if the lack of such temperature control could pose a danger to becoming ill, especially where that illness could have significant secondary impacts. But I think that would still expose you to ramifications from what were your intentions prior to becoming sick (since you didn't plan on catching a flu on the airplane). The illness kept you within halacha, but you didn't plan for that.
This is a good related post here.