Actually I think twenty-five at last count.
And I have tenants. A young couple who were already friends of mine. And they are very popular.
It's an almost eerily good disguise... with the 4-8 cars that are always in the driveway during Sox games, my house is just one more bunch of cheerful twenty-somethings with active social lives. We keep the place neat and don't piss off the one houseful of neighbors, who are also 4 twentysomethings with lots of friends.

I think about this a lot. I hope I don't come to regret it, but it is working very nicely.
I'm on my second go with tenants plus plants, and have not had a problem that didn't involve my asshole ex boyfriend.