My two seniors have been using the house as a potty when we are out, so we got this to contain them when we are gone. Super easy to set up and I love the gold color, it's way less tacky than grey metal. 
They like being in it since it's not like a crate, they don't feel imprisoned. It's nice that there is no "roof" so you can give them things or pet them while they are contained. The walls are a bit wobbly, but I don't think they can be knocked over or anything. Where the door opens, the frame is a good 6" high, so very small or lame dogs may have an issue stepping over it to get inside.
With a nice big bed in there, my younger dogs sometimes hang out in there of their own volition.