Apparently it's just across from the Mystic Grill, as characters were looking at the Grill from the window in The Killer
Unless you mean the page, then it's right here.
In the Vampire Diaries: Get Sucked In game, Alaric's apartment is in in the Uptown Apartment Loft. In the Uptown Map, it is on the bottom left of your screen.
What do you think?