Cost of living question. Hello! 

I have a job offer in Montreal (coming from the states). The cost of living is so radically different between the two places it is hard for me to make a judgement. 

How comfortable is a 70k salary supporting a child? My son would be in daycare, we would need a 2 bedroom apartment. My job is downtown, and we want to live within 20 minutes on the train— ideally walking distance. 

Is this possible? 