It's easy . . . until it's not.Who will drive over and troubleshoot when a tenant reports an electrical problem? 

I just do my books once a month when I am infront of my computer.The big pro with Quickbooks(Desktop or Online) is that it is the market leader meaning most accountants will understand how to troubleshoot you if you have any issues.Best of luck.

Even if you fix the crack, if the window well is still filling with water, it's going to cause problems.So, you need to troubleshoot why the window well is filling with water, and fix that issue, in addition to the crack.The water in the window well is either rain falling in from above, or it's ground water rising up from below, or it's a leaking water main/sprinkler line or other plumbing...or, it could be all three of those things, or any combination.Good luck!

You could start an HVAC company that does installs and/or does trouble shooting when it's peak season.

@Ryan RuncheyAside from DIY approach and the outsourcing approach, there is a middle way, and it may be just be the golden path for many newer investors.There are companies that will set up your account, customize it according to your needs, train you on how to maintain your own books, and help with support or troubleshooting when problems arise. 

Have the tenant use the other bathroom for a while as you troubleshoot.

Typical basic trouble shooting is to inspect all connections, look for loose connections and oxidization, any warm receptacle plates or light switches, smells of melting wire or plastic, signs of burning/arcing/overheating such as blackened areas around receptacle boxes or anywhere there’s a connection, or flickering lights not associated with the bulb not being screwed in tightly.

When I asked about the job times, they agreed to reduce the doorbell charge but held firm on 3 hours for the faucet because they claimed it took time to troubleshoot. 

That's step one on just about every troubleshooting guide for an HVAC unit....

The general synopsis that I am seeing from posts like yours is:If I keep the tenants up to date on the troubleshooting process and show that work is being done to resolve the issue, I'll be fine.