In your OP luke, you write that the clocks are often wrong and you do not want to use your phone to see the time in the middle of the night. Now you are also saying that you no longer wear a watch. OK, I understand what you have written. But do you?

What I now understand you to be saying, is that you are only interested in a way of insuring hotel clocks are always correct. Well, there is only one answer to that. It's never gonna happen. So that means you need to accept what is, not look for what you wish was and you need to find a way to deal with what is, that is satisfactory to you.

So, if you don't want to learn to set hotel clocks or use your phone to check the time, what is your solution to YOUR problem?

Personally, I just unplug hotel clocks as a matter of course. I look at my watch if I wake up in the middle of the night. I set my 'internal' alarm (works surprisingly well for me) if I want to wake up near a certain time. I have no problem.

I'm left wondering just what kind of answer you really hope to get here if you reject all suggestions as not working for you. It's almost as if you expect a magic answer that will make all hotel clocks do what you want them to do. That's just wishful thinking and will get you nowhere.