I thought I had a pretty good tenant. The rental property is across the street from my house, so we know them. I hired a property management company so the tenant do not know we own the property. They are older couple and seems pleasant. They lived there for 7 years, but we decided that we need to sell the property. We had to make them leave and they aren't happy. They were surprised we can actually not renew their lease. We did gave them plenty of time.
The rent was below market, because we thought we want to keep them for a long time, and we like them.
Well, they moved out, and we discover that their bird - not sure what kind exactly, did a number of damage in the house. I think they let this bird free after they find out they are getting kicked out. That bird chewed door frames, blinds, vinyl floor, etc pretty much everywhere has chewing marks. Also the bird leave a lot of bird poops everywhere - on the light fixtures, door handles, closets, etc. It was disgusting. I do not expect everyone to be super clean, but I cant believe someone actually live in a house covered with bird poops.
So yeah maybe awesome tenants for 7 years, but at the end not so awesome.