We are definitely getting an air con unit installed next year. Living in Surrey, this summer was unbearable. We struggled to sleep, work, and function.
We went back home to Dubrovnik for three weeks this summer, where it was even hotter than here in UK. The air con was on 24/7 at a comfortable 25°C.
It was such a bliss!
My brothers have apartments that they rent out on Booking.com and Airbnb. They mentioned that some guests have asked for blankets because they felt very cold during the night. The reason? They set the air con to 16°C!!!! Can you believe it? While nights were 30C, they were "freezing".
My parents said without Air con they wouldn't survive, the best decision in their life was to have them fitted 15 years ago.
Also, someone said Europeans don't have air con. Well, in Dubrovnik or generally Dalmacia, I don't know anyone who doesn't have air con.