The corner I lived on had students in their cars that would back up waiting to turn - and all of them playing different music at full volume LOL! 

My point is that it's like musical chairs.

@Mike B. that's music to my ears! 

The tenant has already served my friend with a lawsuit demanding $4,500 and willing to “settle “ for $3,500, both demands are of course unreasonable.The tenant complaints are noise and loud music used by the construction workers.

I had people calling me from bars with live music in the background, obviously inebriated, people who screamed obscenities at their kids while leaving me a message, on and on.  

When someone tells me they are going to be here a long time and are trying to make music to my ears, my bull Schmidt detector starts going off.They can buy a camper for the amount of rent they would be paying you for 6 months. 

Find any reason to turn away a music or theater major - drama!  

It's not fair and you'll have an argument on your hands.Noise - tell them they are expected to listen to music and movies and TV or whatever - with headphones.They must have their own phone.Laundry - have laundry rules if you have laundry facilities.Advertise for commuters, if you have a market for that - people who need a place to rent during the week for their job, but have a home they go to on weekends.Advertise for med or law students  - they are quiet and just want a quiet room where they can study.Another good roommate option is a fireman/woman.  

It is not your neighbor's role in life to listen to your tenant's music, loud guests, or anything else.  

Also, is there a point where it's up to the tenants to solve their own problems and how do you draw that line--eg if there's noise or loud music in the neighborhood or other quality of life issues that don't apply to the physical integrity and function of the property.