District 5 — the district responsible for power and electricity. The area produces the electricity that powers all of Panem.
In a weird way, it makes sense why Effie's connections directed her here. After a couple of weeks of correspondence, a few things slotted into place for her about you that matches the rumors: a) you're a cutthroat politician salivating over Snow's seat in the Presidential Palace, and you're crazy enough to get the damn job done, and b) you are nothing like Coin. Effie can see right through her, that she is — no pun intended — just another side of a coin with Snow. Thing is, you're a wildcard, and you're aware of the chess game that is the Second Rebellion; you know what the stakes are, and you're willing to let people use you if you're going to use them in return. Nobody is a means to an end for you, and she likes that.
Effie took it upon herself to arrange a meeting with you before she informs Katniss of your position. She wants to see if her instincts are correct, because quite frankly, the District 13 rebels and Coin aren't doing anything about rescuing Peeta without flaunting off the Mockingjay first like some twisted version of the Victory Tour. Effie doesn't want to keep putting her little victors through unnecessary pain.
So, now, she's here, in your opulent office, sitting in the chair in front of your big, mahogany desk that's neatly organized and decorated with insignias and other sort of artifacts and figurines she doesn't quite recognize. She's punctual, you know, and she wants to be present when you emerge into your office from a harrowing meeting with other rebel leaders.
When she hears your footsteps cross the threshold to the opened door, she perks up and turns around in her seat with a wide, white smile.
"My word, you are so much more polished than you are in your letters!" Effie remarks in wonder.