Offered USD850 is it enough?

Hi! everyone!
Just want to ask if the company wants to hire me offer me USD850/ per month. They will shoulder my accommodation, transportation and medical insurance and 2-way air ticket to and from Bahrain.
Is this enough to leave comfortably?
I don't have problem to share room to couple of people since I can get experience and guide or advice especially if their been in the country for quite some time prior to me..

And i hope my last question can be answer by anyone. They already given me before a lower offer than 850USD. Its their 2nd offer. So, i want to ask if its appropriate if I can ask them more to increase my basic salary even if I can get incentives after probation period?

Your response will be much appreciated..