Ask other tenants whether they like the landlord. They're the people who know whether problems get addressed quickly. Your research may say this ZIP code contains the upscale crowd you desire, but check the parking lot. Drive through the immediate neighborhood. If you want families, there ought to be swing sets.
Inconvenience drives shoppers away.
If drivers can't see your sign, they won't find your store. Long, skinny rectangles are hard to make inviting. Most businesses prefer space that is wide rather than deep. If you can't find that, then at least look for pie shapes or squares. The space may be perfect, but if you end up working just to pay the landlord, it's not a good deal.