@Sue K.
For me, well put together middle aged women who prefer to rent than own. They're nice, they report when things don't work and work with you to find ample time to fix it. Typically they have a pet, but the pet is non-destructive. They seem to dig that a younger male investor takes care of their home and keeps it nice for them. Every one of them seems to pay early. Last year I had January's rent a week before Christmas even happened. In one case, a water heater was malfunctioning, told her I would buy it that night and come replace the next morning... she was so delighted she paid $150 toward the cost of it!
I dig owning property.
Recently, and this wasnt a tenant, I bought a ******** property across from a high school for what seem to be troubled kids. The house was beach pink with doors falling off, crap all in the yard, smelled like a cigarette, moldy carpet glued to the sidewalk outside, etc... after we finished making it beautiful and white, pulling carpet and sealing sidewalk with a nice color, landscaping, etc, a lady teacher yelled "thank you, that really transforms the look around here, we appreciate all your work".
That was cool.