One of the problems was the window screens missing and another one where one window has a broken lock (which is the one I misunderstood for not opening).

As long as you can manage right, you keep pressure on them and treat them right then it all works out just fine.As I'm about to get into long term rentals (I'm putting my first offer on 4 family tomorrow) my biggest fear is to have to be committed to go to my rental property at 12am and have to fix broken sink or clogged toilet.... 

Maybe get somebody to re-lay the broken bricks and coat with a sealant.

What you wrote is exactly how I've been planning out my real estate journey in my head, by doing a house hack, becoming debt free and flipping broken cars in the beginning of my journey.

The person doing the work should provide a written invoice with materials and labor broken out.

When banks stop lending to other banks, because they cannot determine with any level of confidence which assets on balance sheets are really worth something, and how much, OK that is not a cyclical market correction -- that is a broken market system.There was a time in late 2008 when some big names like CAT and Deere and Honda and Toyota and others like them were unable to obtain debt funding for their financial services captives for a period of several weeks. 

One flat tire, one sick kid, one broken leg.

It usually ends in bankruptcy and broken relationships .

In your scenario above, the lease has been broken and hence cancelled/terminated, not expired. 

Ask the tenants if there's anything that's broken, malfunctioning, or needs maintenance attention.