A few points, different tax laws and language barriers made it more difficult.  

Don't take care of them and you will find it difficult to keep occupied. 

As a newbie back then, I couldn’t understand why it was so difficult as a hands off investor and why every single PM either bailed on me or stole from me.

I’m a newbie, I’ve always dreamt of buying multi-family units & now I’m finally at a place where I have proof of income and make decent money. upon further research, here in Florida it’s difficult to find any without major rehab work.

You are VERY much correct that its difficult to know who can provide you the value.

Residential properties are based on sales comps in the area and this is very difficult to control.

Some financial institutions also make managing assets under two separate trusts difficult, which can add complexity.If you prioritize simplicity and ease of management, a single trust could be the way to go.

Generally speaking, they will not play by your rules, take kindly to rent increases, and will be difficult.

With continued population growth and industry, LTRs are great for the long play but can be difficult to cash flow.   

This is a difficult thing to do in today's market.