Mate,

I would negotiate higher.

You cant get f*ck all for 11k anymore and the rent is still rising. If you want some kind of three bedroom villa you will need double that. Call around the real estate agents and get a feel for how much things are right now. I would ask them to provide a villa infact. As for the Trans. Allowance that is shit too, I would like to know where you can rent anything that moves for that.
Salary is ok...lots of Jobs in Qatar mate so bargain bargain bargain!!!! Do not cut your self short like I did beacuse one you are in it is hard to move up.

Regards,