Dont know what the salary is for that profession but I do know that salary is very low to live in Qatar. Accomodation here is very expensive and yes I know you have been given accommodation but if it is only for a single person then you need to think when your husband comes and has no job initially you will have to get bigger accommodation. Prices for rooms start at approx. 3-5K a month.

If its a stepping stone to enter the country then be aware changing jobs is not straightforward. Basically you cannot change jobs without a NOC (No Claims letter) and the company/sponser decides if they will give you one.