How to answer "Why this location" question?

Grew up in Charlotte - there's a surprising amount of M&A activity going through there given that it's a smaller metro area (less so post-2008, but there are still regional offices of some major firms there for a reason...) I'd say try to focus on an industry the boutique covers and/or how you like the culture of the area itself. As long as you sound like you've done your homework you'll be fine.

When choosing where to live take into account that the public transit system leaves something to be desired and rush hour traffic is generally not bad if you're early. Johnson and Wales is a college in the downtown that should have some limited summer housing. If you're not working 100 hour weeks, don't feel the need to be right in the downtown if that's not your thing. Although it can be a bit pricey, Myers Park is a nice area if you can snag a good deal, and an especially useful section of town for getting around using back roads. There is a lot of small/medium sized office space that general area, so I'm guessing the boutique is located nearby if it's not downtown. Avoid Highways 521, 16, and 51 at all costs during rush hour if you drive to work. Good luck!