Novita is right.  15K for a stand along villa that is not a part of a compound and the housing manager for my company told me that 3 bedroom villas in compounds are going for around 24K and higher.  Car allowance is low too. to give you an idea - renting a compact car is around 2K per month.  Of course buying a car and making payments is less expensive.

As long as tuition is covered - if you could get more for housing, it would be a decent package.