If afforded the opportunity to chose, what are the most important things you look for in your next duty station?

As we approach PCS season, the questions are beginning to role in with the most common one being, "Does any one have any information on (Insert Post/Duty Station name)?" From the initial requirements for the Army, i.e. the DA 5434, to once your arrive to your new location, what are the most important things you look for?

What were your struggles, and what do you regret the most about prior moves?