Here in Norway AC is not the standard in hotel rooms. For 80% of the year, that's OK - but it can become pretty uncomfortable if you're booking anytime between mid-June and mid-August.

The standard here are heat pumps, at least for residential housing. It is really only a problem if you live in blocks or apartment buildings that are housing associations, with strict rules regarding how such heat pumps should be installed.

With that said, for my travel to Europe - especially down south, AC in the hotel room is an absolute necessity. A couple of years ago we ended up in a completely booked hotel in Italy (mid July), where the AC in our room was busted - it was beyond miserable. Ended up changing hotels after one night.