Dear Air Conditioning Company... My Dream Air Conditioner (for Innkeepers)

I want an air conditioner that is made for innkeepers....
On the unit are two controls... one for ON and OFF and another the allows people to set the temperature to Cool or Cooler.
What I don't want... other options. That's right, I don't don't them to be able to change the temperature beyond two presets, cool and cooler. I don't want an "energy saver" setting (it should default to this) and I don't want a setting for speed either.
There should be a way for me to set what "cool" and "cooler" are, but the guest shouldn't need to know this. And NO temperature gauge for the guests.
This is my dream. This is the air conditioner I would put in every room. I wouldn't have to reset it each day because people don't understand Celsius, Fahrenheit or even flippin' signs that are there to help them in spite of not knowing Celsius or Fahrenheit. They don't understand that lower temperatures don't make the air conditioner work faster, just longer and noisier. They don't understand what any of those pictograms signify. Just make it so simple that great grandma could use it.

.... and automatically turns of when a window is opened.

... And when the heat is turned on.

Yes I do find it a bit upsetting when one does not know what C is they see 19 and can't understand that is cool if not too cool /cold Signs heck who reads now. But I bet if you texted them then and only then would they understand. Now a days texting is how most people relate to each other. You have their attention fully and not on some thing else.
Less stress ???? I don't think so but less up front. Isn't texting the new way to go. For me No way! But I won't go into that now.

Absolutely. Also that the inverter splits have self cleaning filters and coils.

Make it a combination AC/heater too. With a wireless indicator letting the innkeeper know what the temp. is along with a wireless remote that we can control from outside the room!