Am I obligated to pay for time my apartment was labeled no occupancy?

I have rented here for 2 yrs and recently there was a water main break that rendered the entire building no occupancy. The repairs took 2 weeks during which time my husband, child and I stayed with my parents. We did not have to pay for a hotel room but contributed to groceries etc and feel that we should not have to pay rent for the time we were out. Anyone know anything specific to New York State law regarding such situations? We are not trying to stiff the landlord, would just like to pay a prorated amount for the time we were out.