Your other mod is currently working on a more detailed guide to the city, but here are two fantastic references for you to use to place your muses in their everyday life in the city!
Apartments:
http://www.sublet.com/spider/supplydetails.asp?supplyid=1497439 <-- This tool is a great way to find an apartment around the city in whatever price range your character is looking for. Please keep in mind most housing in the city itself is very expensive. Apartments/condos are going to be the best bets as brownstones go for ridiculous gobs of money. Check around and make sure you're not choosing the same apartment as another character before choosing your own. Please include the apartment you've chosen in your journal information post. Thanks!
The City:
This map will be your best friend. Use it, abuse it. You can zoom in to specific neighborhoods on the island and see street views and what business (cafes, shops, etc) located there. It is exceedingly useful!!!! I've got it set up to include all of the current landmarks from the game. Please comment with any you'd like added!
Please leave a comment to this post with your muse's address (if not an approximation will do) and any other landmarks your muse will frequent. This way I can add them as pins to the map.