@Lydia94
we have a safe in both apartments. User manual is on A4 paper . I never managed to figure it out so Silvia was in charge to set the code and everything. Guests rarely used it and when they did then something always went wrong - the cord of their photo camera gets stuck in the door, bateries died and it starts beeping, guest didn't turn the handle in perferct 90 degree angle and coudn't open it - now imagine a guest panicking because he can't open the safe and he has a flght to catch!
.it is just too much trouble so we don't offer it any more. We had too much guests struggling to operate the most common european lock and keys, ikea window blinds and the simplest faucets.