The pigs love their cage. I adopted them from a family that couldn't care for them any longer. They were in a very small cage. They are both thrilled and started going up the ramp immediately.
Cute photo, and great cage. The only thing I would be worried about is that one might push the other off of that ledge... maybe you could make a small railing with mini-grids or something?
Good solution for a 2 story closed cage - it looks nice and neat. How do you open it up to clean it? Right now a guinea pig is our only pet, but we may have a cat/cats in the future so I'm curious how to make the 2 story but still be able to access it!