Thanks guys for all your comments...

Unfortunately I can not negotiate on the housing allowance of QR 3,250 per month as they say its a 'company policy'. However if I get married, they double the housing allowance to QR 6,500.

Moreover I have the option to stay at a company provided sharing accomodation initially. In that case I do not get the housing allowance of QR 3,250. In case I accept this offer, I plan to stay at the company provided accomodation for the first two months and then look out for a place of my own.