Thank you this reminder to avoid comparing myself to what others are doing.

@Kiersten Vogt keep in mind too that if something, septic or otherwise, comes back in an inspection, remind the seller that he then has a responsibility to disclose the defect to any future buyer.

@Bradley Buxton I'm so glad you commented because you just reminded me I have family in NV - they just moved there.

Areas like Bandon by the Sea Oregon for example, with one of the top public Golf Course's in the world, reminds me a lot of the Monterrey/Half Moon Bay Area and has attracted high net worth investors in recent years.

Wait till tomorrow"What you say above reminds of this quote also:“All of humanity's problems stem from man's inability to sit quietly in a room alone.”― Blaise PascalMeditation saved me and made me calmer, controlled and more empathetic.

Moving foward: 1) Enter into month-to-month leases instead of yearly (term) - they are the SAME to YOU but month-to-month give you all the leverage should this occur again in the future. 2) You should add a clause to elaborate on and expand on the current 'Noise/Waste' clause and the new clause should focus mostly on nuiscance and violation of other Tenant's quiet enjoyment and the remedies (fines) leading up to eviction if the issue is not corrected. 3) You should add a clause to protect yourself from the other Tenants (the good Tenants) ensuring to clearly spell out that you are not resposible nor do you guarantee that other Tenants will abide by the lease nor is it your respobility to enforce the lease vs. other Tenants, nor do you guarantee safety. 4) This is the most imporant one that will fix most of your issues: Because you are adding #3, you will now add yet another clause that gives ALL Tenants the right to enforce the lease in regards to your new 'Noise/Waste clause 2'  against any other Tenant who violates it and will idemnify you and hold you harmless, ensure to limit the right to only the pertinent clauses ---- essentially, if Tenant A complains to you that Tenant B is making funny faces at them... you can inform and remind Tenant A (in writing) that if the issue is a problem they have the right to pursue legal action vs.

I reminded them they couldn't check into a hotel without an ID... they agreed and provided it lol

Perhaps, and they are some bizarre loans that remind me of 2008.

She would like to sell it so that it's not a constant reminder and I completely understand why she would feel that way. 

Just a reminder that even if he owes you the entire security deposit, you need to follow your state and local laws regarding notice to him showing itemized deductions from security deposit, any balance left or balance due to you, and proof you sent to last known address, I believe, even if it's your own unit, as he could have put a forwarding notice in with USPS.