It appears you have no real links coming into your sites apart from non related ones. If you look at the first page of Google for the search term you are competing against some websites with decent domain authority. Go back to basics, look at your content, get yourself a decent link building campaign and build for the long term. Have you thought about targeting the longer keyword phrases that are less competitive? In my eyes for example your meta title is too long and rather keyword stuffed if I read it with human eyes. How about Social, do people share you on facebook twitter, etc etc.

If I was looking for an apartment I would be wanting to find out about the various areas, transport, price changes, etc. Thought about a blog to increase the content and cover stuff that people might want to find out about?