Vermin and Roaches
Pros
Large floor through units with great light
Cons
Unresponsive landlord, had to withhold rent for 2 months before she even hired an exterminator to deal with the mice and rats and roaches. Floor boards are rotted through near all the radiators.
Advice to the owners
Sell all of your buildings, clearly you are not cut out to be a landlord. On second thought, who am I kidding? You don't mind being a slumlord one bit.