What is the ideal temperature for a comfortable waiting room

Okay, so I’m setting up a waiting room for my small medical clinic, and I’m really trying to create a welcoming and calming atmosphere. I want my patients to feel as comfortable as possible while they wait. I’m talking comfy chairs, soothing music, the whole nine yards. But temperature is a HUGE thing, right?
I’m worried about blasting the AC and making everyone freeze, especially older folks, but I also don’t want it to be stuffy and make people feel ill, especially if they’re already feeling under the weather. What temperature should I aim for? I’m thinking Celsius, but Fahrenheit answers are fine too, I can convert it.
And does it matter what time of year it is? Like, should I adjust it slightly in the summer versus the winter? Is there some magic number everyone agrees on for a waiting room setting, considering people are usually sitting still and might be wearing different layers? Any insights would be greatly appreciated!

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