OKay this goes like this...

If you are joining for HMC (Doha) -
If you are grade is below 112 , you get 2 BHK in Barwa City
If you are grade 112 and above, you get 2/3 BHK in Barwa City
If grade 114 and above : Villa if available or else 3/4 BHK
(but it depends a lot on how you negotiate with housing Dept.)

But initial accommodation will be share till you get QID and move into your place. But shared accommodation is big and good and furnished. You have everything except the gas lighter to light your stove (so get it)...

They will gove you 30,000 / 45,000 to furnish your home depending on your grade. All the best...