A/C throughout.
Several years ago, I stayed at a very nice hotel on the Adriatic coast of the former Yugoslavia. The view was magnificient, the staff so very accomodating but only the reception/lobby area, dining and banquet rooms were air conditioned. It was late September when normally a/c wouldn't have been factor but they had a heat wave that week. It was sweltering everywhere, especially in the rooms at night. It was not the hotel we were supposed to stay in, our flight was delayed due to a sever weather at JFK, we missed our connection in Germany and were rerouted via Rome. We arrived at our destination about 24 hrs late and So, our original hotel had booked our rooms and we had to go to another hotel.