More effective to door knock in some situations. 

Ah it's unfortunate that this is the type of tenant you're dealing with in this situation.

If it happens a second time, tell the tenants who are making the noise that they need to stop or they are in violation of the lease.This is solid advice and exactly what I would do in this situation.

I'm fine with what I paid him for the work he's already completed, but would just like to hear from him that he's done with the job or what the situation is.

There might be some hoops to get through with conventional financing with your income situation, but if that doesn't work, you could use a debt service loan.

Any deal that I've found seems to have sold within the last 2 years, and its alarming as to why it's back on market again unless they have problems with the building and/or tenants.

It can be done but each situation is specific and would be underwritten to see the risk and what the exit strategy is. thats the key with shorter term loans - understanding what the borrowers exit is.

My spouse was the primary decision-maker, and I’m unsure whether to keep my share, sell, or hire a property manager.For those who’ve faced similar situations, what worked best for you?

Some lenders work with 220+ lenders and can really understand which lenders are best for you based on your situation. 

The only situation that I think it would make sense for you to start investing right now would be if you are not investing the full $200,000 and are looking to take some money off the board and put it into a safer investment.