I'm in a small apt and have 1 gp. She has enough stuff for 6 though! I have a 2 x 4 CC cage of which 2 x 1 is a kitchen. I have a bazillion fleece cases for her fleece flippers, sleep sacks, and different color igloos, toys... I also have a midwest cage to put her in when I'm doing the once a week cage clean. I would have 2 but can't afford the possibility of any more vet bills on more than 1. I'm on disability. I've already spent over 1K on her in less than a year! :/
I have her 2 boxes of hay along the wall in the dining room so it's out of the way, her fleece stuff stuffed in 2 boxes that are on top of each other next to her cage, and toys et al in the hall closet. I live alone so I don't need to worry about what someone will think about boxes out in sight.