I just got my bunny a new cage this past x-mas, my boyfriend helped me put it together. Its pretty spacious, and she absolutely loves the second level, it was pretty easy to do once we figured out exactly what to do. But check it out. She really likes it, sometimes she doesn't even come out when I leave the door open, and she has plenty of room to stretch out and just chill.
http://i142.photobucket.com/albums/r96/kjgirl17/100_0536.jpg
http://i142.photobucket.com/albums/r96/kjgirl17/100_0537.jpg
http://i142.photobucket.com/albums/r96/kjgirl17/100_0605.jpg
http://i142.photobucket.com/albums/r96/kjgirl17/100_0514.jpg