A closing 4 days after end of inspection,  is not common.

This is a common theme....so many cities and permanent residents hate STR. 

What are the potential pitfalls? 

The common problem here is recent comps in the area.

This is a common beginner mistake. 

It also helps when you have an experienced investor/ agent (your aunt) pointing out some of the pitfalls

Hello,I just closed on a multi family property and the old owners told me they would not supply any appliances.They let the tenants know that the existing oven, refrigerator and washer were able to be used by the tenant, but would not be serviced or replaced.Is this a common practice?

@Michael Daniele, Purchasing with a partner in a 1031 exchange as tenants in common is fine. 

I was wondering who might be brave enough to share any unexpected pitfalls/struggles that they encountered by being their own property manager of a multi unit apartment.As I began thinking about managing a multi-unit (especially one such as a 10-30 unit dwelling), I tried to think outside the box about possible unforeseen challenges outside of the typical calls "my sink doesn't work" or "my toilet doesn't flush". 

DSCR Has some pitfalls i wasn't aware of, I'm still halfway through the process so I'm sure I'll find out more.