They are normally doing 40+ hours of clinical a week & only home to study and sleep. 

They opened up all the windows due to the smell and all stayed up stairs to sleep overnight and some of the the people got a Room at the Resort down the street. 

In the end you're going to need to make the decision that will make you sleep best at night.

After educating yourself, you can then make a more informed decision on how you would like to use the funds (pay down loan, BRRR, buy property, syndicate, become private lender etc).Ultimately, you will have to decide what fits your risk profile and will allow you to sleep easy at night.

What can I do with this tenant who is literally making me lose sleep because they are nasty, mean and condescending.

Can you pull out hookers that are causing housing disturbances and set them on the curb?

I leave instructions for shutting off the water/gas and emergency numbers (for utilities, police, etc.) in the unit, taped to the back of a kitchen cabinet door and point it out to the tenant when they move in.I don't keep my cell phone with me when I'm sleeping. 

Recently, I am seeing a disturbing trend with people overpaying for multifamily units.

Heck, a person could even partition off their living room and dining area and make them in to sleeping areas. 

Realistic advice: I agree with @Jaron Walling parlay the $10K into a bigger shovel.Unrealistic advice: Maintain the biggest shovel you can, drop your expenses to $0, invest the difference...Sleep in your car/shower at the gym, sell everything, geo-arbitrage, sell plasma, sign-up for paid experimental trials, etc...Overall, I think you'd be better growing that $10K to let's say $500K in 5 years and moving to a cheaper part of the country or a cheaper country.