The Landlord here lives on the 3rd floor. He has Cameras installed all around the property. He does not work, so he sits at home all day watching the cameras. He knows who comes and who goes.
One time my wife was coming home late at night and she saw him staring at her out the window with his lights off. When she saw him she stared back with a shrug and he backseat slowly. the next day he closed his blinds and through one of the pieces of the blinds you can see a camera.
The landlord comes into property through the back un announced several times. once while I was sleeping. which is how I caught him.
another thing is when we signed the lease he made promises, then after signing the lease he did not allow us to use backyard or have people over in the front yard. He also took our storage area away. when asked why, he said it wasn't in the lease.
also when we moved in we had lead paint issues. we have a son who had high level of lead in his blood from our last address. so Chicago Health Department came and found lead. it took 3 months to fix the lead. At end of the lease the landlord said he is raising the rent because of what he spent on fixing the lead problems for us. I told him its the law , you didn't fix it for us, you fixed it because its your property and your investment.