We have family in South Harlem, and have stayed in many different apartments in the area.
Cons:
-Lockbox attached to public telephone booth was missing when we arrived. Perhaps cut off by phone company? After a long flight to NYC, and Uber from JFK, not the easy check in we expected. Fortunately our family was home, and we could move our luggage to their apartment , as it was over an hour before replacement key arrived.
-Old food left in fridge, dishes drying on counter, and mop left out in bathroom.
-If visiting in middle of summer or winter, confirm as to cooling and heating. Window a/c units? Space heaters? There is a huge fan that was sufficient for us in mid-May.
-Busy street corner so bring earplugs if you are a light sleeper.
Pros:
-Location, location, location: 5 short blocks to express trains, 1/2 block to full service Best Market, check out Harlem Wines...