Hey, thanks for the kind words and I'm glad you're enjoying the game! :)
As for the apartment, if you haven't found it then you're missing quite a lot of the game, including most of Roxy's storyline if I remember correctly. You'll need to be on the Town map and click EXPLORE. Then enter random directions until you find an "empty" scene (no event triggers) and choose not to look for any escorts.
At that point you'll be given a text hint, pointing you towards a fire. Enter the correct directions, based on the hint, and you'll find it. There's three new characters to find and interact with at the apartment, so good luck!