Sublet in Bay Ridge (Dec-Feb)

Hello,

I have an out-of-town guest coming for a long visit (early Dec - early Feb), and I need to sublet an apartment (not a share and furnished). I used to have no problem finding sublets when I lived in Park Slope, but have run into difficulties here in Bay Ridge. I've checked Craigslist, AirBnB, Sublet.com but options are very limited and are either luxury (at $2500 and up) or rooms for rent.

I was wondering if anybody out there might be able to give me any tips or leads on this. All suggestions are welcome.

Thanks!