Please could you explain the difference by explicitly making reference to the following examples:
dokomo yokunai desu none of the places are good
kazoku wa saikin amari un ga yokunai. Our family is not having much luck lately!
It was a no good hotel. Dame na hoteru deshita.
I know that 悪い (warui) also means "not good", but it has the added meaning of bad, sinful, and so is a stronger form.
Please keep your explanation relatively simple as I am a beginner. Please could you make reference to the above examples.
Please also explain a general rule for knowing when to use one over the other.