Avoid basement unit
Pros
Large unit, central A/C, backyard access
Cons
Bottom floor of this duplex unit repeatedly flooded. Owner would ignore complaints until escalated via 311. Black mold problems. Heating and cooling expenses are absurd due to faulty building wiring/poor insulation. No drainage in backyard so it is a breeding ground for mosquitoes. Green mold visibly growing on outside of unit. Unit not deep cleaned after previous tenant moved out.
Not the worst
Pros
Responsive to maintenance calls Kind neighbors
Cons
Illegal bedroom in the basement