What due diligence required when inheriting tenants

[Ceaneh Alexis]

In negotiations for a my second investment property, a duplex in Georgia. Both units are occupied by month to month tenants at below market rents. The units also need some cosmetic work. What due diligence should I be doing during sales process? If I need to do updates do ask both to leave or maintain one for cash flow?

Thanks for helping out a rookie.