I'd go for something with colour cause your apartment is monochrome. ALso I like red.

I like this sofa and chair: http://east.roomstore.com/details/FRA-388-508710901/4

I like this sofa:
http://east.roomstore.com/details/FRA-388-508710901/4

And this sofa:
http://east.roomstore.com/details/SNN-923-509721702/5

this sofa: http://east.roomstore.com/details/STR-Main-Event-509710802/6

or this sofa: http://east.roomstore.com/details/REL-B98900-509711701/12

this table: http://east.roomstore.com/details/DNS-4536-509710401/5. I like tables with under shelves - I put my magazines and some cat toys there. Lilly Cotton likes to sit there during dinner.

I like this set: http://east.roomstore.com/details/FRA-613-508711001/8
this set: http://east.roomstore.com/details/HIL-8220-509711801/9
this set: http://east.roomstore.com/details/CRA-951550-509722401/12

I don't know if you care about cat hair showing on things, but if you do, bear in mind Gator is a light grey cat.