It has a new furnace and air conditioner, new water heater, new main electrical panel, new carpet and paint, new range, and is brick, so minimal exterior painting will be needed on the eaves when the roof is replaced, about 10 years from now.   

Can't think of any pro's for YOU, only for your up-until-midnight washer-dryer-heater-air-conditioner-dishwasher-TV-stereo-blasting-abusing tenants!

If you don't want to gut and totally rewire I suggest at least adding some grounded outlets by the windows for window air conditioners assuming no forced air.

It was mechanically perfect except for and older air conditioner that worked just fine.The numbers:I Did all the work myself except for granite install and carpet laying.Purchase price $185k + 25k in renovation= $210k invested Bank interest was about $5k/year X 5 years= $25K Total taxes paid $21kTax free profit because it was primary residence= $63k.There was a bit of appreciation but not that much.The bank appraisal when I purchased it was $215 and the assed value was $280 so I definitely made money when I originally bought it.I considered renting it or doing FSBO but called a realtor friend in for a consultation ahead of time. 

Do preventative maintenance on appliances and air conditioners.

Sidewalks will not be being pushed up by over grown roots and air conditioners will still have plenty of life left in them to get several decades down the road.

My property had a water damage because of the air conditioner pipe of the above unit.The water leaked from the ceiling, carpet all wet, so I called the construction company and the dried the wall, floor and need to get replaced the carpet.I claimed to the insurance company so they will handle it, but it looks like the insurance company don't claim to the owner of the above unit and I need to pay the deductible.What the insurance company says is the water damage is an accident, it is not the owner's fault. 

There is a door that separates the two units, but there is still some noise transfer.In the past I've used this product to provide some acoustic separation, but the company no longer sells it and I haven't found another supplier.https://www.amazon.ca/Conditioner-Windshield-Waterproof-Soundproof-Panel-Gray/dp/B07L3M8KH5/ref=asc_df_B07L3M8KH5/?

I’ve never found a problem but what if an air conditioner was stolen, or the appliances removed? 

Now, I get to reduce my annual income projection by $2400 per year, or $24,000 in the next 10 years.One tenant already moved out and the apartment needs a new bathtub, flooring, refrigerator, painting, air conditioner, electric wiring for the air conditioner, new bathroom fan and a little more.