I like it! I feel the shape is a bit awkward, though. But I like the flooring a lot, I like that you aren't obsessed with corners (and you will go through that stage before too long, try to avoid it if you can).
And I know this isn't intended for Classic iPhone, but after you practice more and get hired, you will need to make very big rooms to fit the hordes of people coming to buy the items in your shops.
Nice job!