Things I loved about the apartment:
1) It's in New York
2) It was levelled, the living room was on the main level, the bedroom was upstairs and the bar was on a lower level.
3) Since it was levelled, it had a staircase. Any apartment that has stairs is perfection in my eyes.
4) Wonderful red brick walls
5) A fireplace
6) Huge windows
To prove it to you, I found a few pictures from a blog called Silents and Talkies, which is all about old movies, woohoo !
And if you're still not convinced, take a look at this little part of the movie.