Hi Joseromi,
I've never been to Kuwait, but I work a little south of there in Saudi Arabia.
I'm told Kuwait is good, though it's still the Middle East. There isn't any alcohol, as well as the other restrictions of muslim life, but over all Kuwaitis are laid back, especially compared to the Saudis.
I'd say that Kuwait is safe. I never hear of any problems there.
Just make sure the pay is worth it, especially if you have to pay for your own rent. Things are getting expensive in parts of the mid-east.