I have an easier time believing Obi Wan lives in something most people would mistake for an abandoned structure. Not to mention he lives out where most people have the sense not to venture into, even on a nice sunny day.
Smoke from the chimney, and a vaporator on the porch is advertising that a Jedi in hiding wouldn't want.
Tatooine isn't a nice place to live, and the cinematography, intentionally or not reflects that.