Hmm.. I got 2 recommendations for you.. neither of which you'd probably expect

First up, Minneapolis/St. Paul, Minnesota. Good music scene, good nordic-esque roots in the people, and weather that's probably pretty similar to Sweden. In other words, not too much of a shock to the system. It's also one of the cleanest and safest cities of significant size in the USA.. It's not terribly far from Big cities like Chicago, nor is it all that far from the middle of nowhere, if you just want to get away from the humans.
Second.. If you're not so much of a "Big City" type of person... Bloomington, Indiana. University town, but not huge... Bloomington is one of those towns where it's hard to say exactly why I recommend it. The main reason, I guess, is that if you like *interesting* people, you will find them in Bloomington. Honestly... it's got a higher per-capita concentration of "interesting folk" than even San Francisco or Sedona. Another benefit to the Bloomington, Indiana area... About oh, a half-hour or 40 minute drive east of Bloomington is this little town called Nashville, Indiana.. Nashville is this bizarre ass little town midway between "Bean Blossom" and "Bone Gnaw"... that's kinda this weird little artist community. Dudes that do wood carving, leather working... there was a glassblower guy last time I was there... little shops that sell odd bits to tourists... Kinda a neat place.. and good vibe. Plus, it's right near the Brown County State Park, which is some lovely hiking ground.
Honestly though.. I'd stay the hell away from the real "Major City" places.. LA is insane, Chicago is um... a psychic cesspool... and New York is the world's biggest terrorist target.. They're interesting places to visit every now and then when you feel brave.. but jeebus, you don't wanna live there.
"Let's think the unthinkable, let's do the undoable, let's prepare to grapple with the ineffable itself, and see if we may not eff it after all." -- Douglas Adams
"America is the only country that went from barbarism to decadence without civilization in between." -- Oscar Wilde