Within two months, the female tenant reported us the stalking and harassment from the guy of next door, and filed a police report.

Then go trip the GFI breaker. if it turns off the toaster than the outlets are tied together and you should be good to go.I'm so glad to hear Baltimore is harassing private property owners instead of focusing on important things like tge murder rate!

They are now telling us that if we contact them again they are charging us with harassment and threatening to sue us.

And I WOULD have filed an ADA complaint with the Department of Justice, a complaint with the local real estate commission, and a private lawsuit as well because I was already into the rental prepaid to $4000.I'm just glad I'm there now to protect my daughter from that kind of harassment. 

You have my permission to rent out those rooms :)  .....No lender will harass you in your house as long as they get their payment. 

I was harassed by one of their underlings here after I asked not to be contacted by him.

BecAuse the lady clearly was harassing me because I stood up for myself.

If so, I have a chat with them, and possibly send a 30 day fix or quit notice.Third up, if the downstairs tenant is actually harassing the upstairs tenant (I am betting not), the upstairs tenant could claim they are being harassed and therefor get out of their lease early without penalty. 

He was 1) Ticketed for domestic disturbance, 2) Has harassed the tenants upstairs for making too much noise [they are now moving out], 3) Was 30 days late on March rent due to the government shutdown [was able to get rent assistance from the County], 4) Smokes in the house [though I have no way to prove it], and 5) Told me in December that he needed to terminate his lease early because of the noise upstairs, but hasn’t been able to find a new place for the last 4 months.

"If the landlord makes an unlawful entry or a lawful entry in an 27 unreasonable manner or makes repeated demands in connection with an otherwise 28 lawful entry that has the effect of harassing the tenant, the tenant may: 29 (A) Obtain injunctive relief to prevent the recurrence of 30 the conduct; or 31 (B) Terminate the rental agreement."