I've had both. I'm the end they're represented by people. Some apartments had good apt-managers and a property company that invested in maintenance. At least one was cheap on maintenance and tried to screw me when I got injured due to such. Their insurance company was surprisingly decent and compensated me reasonably.

I've had landlords that were similarly awesome. Usually a basement suite or an old person who rented out to students, and I got lucky with my choice of roomies. I've also run across the cheap bastard variety, and some that were downright sinister with some ego thrown on top.

Thing is, the number of good landlords seem to have decreased over time. Most cited a bad tenant experience. Some were older and couldn't keep up with it. It feels like the "fuck them, they're probably just out to screw me so I'll screw them first" mentality is growing on both sides of that fence and I'm the end it's the decent people who end up screwed they most (on both sides).