We moved into our house here in Thailand and the house have a hotel style safe. We didn't know the code or have the extra key to unlock the safe when you don't rember the code. Well I forgot all about this safe since it is in one of the guest bedrooms, until yesterday when I started searching the web forba solution on how to get it open. Well, it isn't actually science, but shockingly easy to open. As you can see from the Youtube video, the solution I used was to hit on top of the safe and at the same time try to twist the knob to open position. Did it a couple of times, and voila, my safe is now open.
After this I changed the batteries and reset the codeby using a switch on the inside of the door.
Well one thing is for sure. I do not think of hotel safes as much insurance for my valuables anymore.