My husband and I have invested in a couple apartments in an up and coming neighborhood in an adjacent city. By up and coming, I mean it is a place where the recent college graduates come to live because the rents are cheaper, there are fun bars and great restaurants that aren't expensive. A fair number of divorced dads live here too while their ex-wives and children live in a much nicer town just a mile or two down the road.
Around the corner from one of our units has been this Asian 'massage' parlor. We've owned the unit for six years now and that business has been there long before we purchased our unit. This area has a few of these establishments. They have always ticked me off as they are in eye sight of an elementary school and surrounded by residential areas. Bring the whole tone of the neighborhood down. From a financial perspective, it turns off tenants too. But really, it makes me furious little elementary school kids have to walk by this business to go to school each day.