IT can definitely be improved from an ROI standpoint with metered and reassigning all utilities, charging for laundry, renting garages to tenants, renting storage space.I own a portfolio of duplexes and single family properties that are doing well. 

I had an experience with a terrible tenant who reported me for a bogus claim but by making the claim it allowed me to gain access needed to get photos of the condition of the property, and then the tenant refused to allow maintenance people in which really helped prove my side of the situation.If possible, explore alternative dispute resolution options like offering the tenants a cash-for-keys agreement.

There is some future Infrastructure improvements taking place, which can/cannot impact the property ROI. 

Investing in your self improvement is wonderful most people do not have the mindset for growth.   

They may sell in a few years when interest rates drop or keep it longer term as cash flow on the property improves!

That alone was the biggest improvement for my business practices and allowed me to take all of my bookkeeping in-house and eliminate the expense I was shelling out for a bookkeeper.

But, I also think the access to information today: all the books, these forums, conferences, gurus on social media...  

Diversifying your portfolio could reduce risk and improve overall returns.Higher Cash Flow Potential: If you redeploy the equity into markets with higher cash-on-cash returns, you could significantly increase your monthly cash flow.

Some landlords use lockboxes or smart locks to grant temporary access, but that has risks if you don’t have someone to oversee things.2.Move-out Inspections/Cleaning: Again, you’ll need boots on the ground for this.

Why buy into a system when you have a wealth of information here and access to many experienced investors who are willing to share their knowledge and experiences?