I've not been to Seattle, so take those rankings with a grain of salt, and I've personally had very good experiences at each of the other three... but, without even taking into account the potential hookup we may have with the Hyatt in Atlanta in the future, it's hard to deny what that location offers. I'm really not trying to trash other destinations, just point out how successful ATL appears to be.

While the local scene surrounding Atlanta is as robust as other places, the airport is extremely accessible being the hub for Delta. And there isn't much of a chance of a blizzard wrecking anyone's arrival. No need for a shuttle or uber at any point because the public transportation is more than sufficient; after that everything is within walking distance.
The hotel itself is nice, as are most destinations that aren't in Princeton, NJ. The staff was actually very accommodating and understanding of our odd hours, internet/streaming needs, and even brought us ice for the beer. I don't know that other locations are as receptive to our antics.
A mall with food court is connected to the venue via skywalk for those who are not Bryan M. But in the middle of downtown EVERYTHING is available within walking distance. A CVS is well stocked with soda/water/beer/food not 3 blocks away. Quality restaurants abound.
Atlanta is easy.
My knock against NJ: getting from the airport to the hotel, winter weather, and you have to walk at least 3-4 blocks for anything not in the hotel.
Against MN: most things are at the mall, but that requires a shuttle or uber. You're basically stuck at the mercy of the hotel bistro most of the time.
Can't say anything against Seattle except that it's on the other side of the country for "most" of the US SW players. (East coast bias is real)