North NJ - Tenant Vacate Issues

[Mike Savage]

Hi, 

A month to Month Tenant vacated my apartment during the middle of the month by giving notice few minutes after vacating the apartment. History : Initial Yearly Lease was converted to Month to Month Lease after Tenant's request after 5 months of occupancy since he wanted to buy his own property. Tenant stopped paying rent thereafter, sent eviction notice, started paying rent thereafter. Total Duration of occupancy: 1 year 1 month(all this happened within 1 year 1 month of occupancy).  

Location: Hudson County, NJ. 

1. The notice period for a month to month Tenant can be given in the middle of the month? 

2. Do I need to get repairs done or I can sue him on the basis of quotes for repairs? 

Thanks in advance.