Once you close the problem with those tenants whom you don't have a relationship / history with will be yours. 

If you plan to invest in real estate you want a relationship with someone you can hire for issues or even to get questions answered.

Chattanooga, TN resident, realtor, and (newbie) investor here.A mentor told me real estate is all about building relationships, so here I am! 

@David Zimcosky whenever I'm looking into a new market, I establish a relationship with a local realtor first to get to know the market and the path of progress.

The California State Teachers' Retirement System studied this and was quoted to say, "CalSTRS executives have not seen a relationship between co-investment and investment manager performance to 'any significant degree.'"

I’m a Florida realtor who has great relationships, with dozens of builders and developers all over the state.

It's all about who you know, and that's because you're entering a relationship with the partial seller. 

We use Chase Bank, due to all the online tools they offer.In the past we've used 3 small local banks, in an attempt to establish a relationship for loans, but that never seemed to work out.

Make your tenants check better, including who they are in a relationship with and what you expect about guests.

What I mean by that is, you need to establish good relationships with the listing agents that list REO's and distressed discounted properties.