A broody needs a little room to walk around in, besides the nest, food and water. So it depends somewhat on your setup. You could mount food and water to the wall where they would use almost no floor space. I can see that crate in your pic as enough for a broody, if the nest, food and water don't essentially use up all the space. (Did you know that chickens can learn to use a wall mounted rabbit waterer quite readily?)
I have a large coop, so I fenced off a corner, about 4'x5', for various uses including a broody pen or room. It is bigger than a broody needs, but nice that she can walk around a bit without tracking that good old broody poop all over.
I have a large coop, so I fenced off a corner, about 4'x5', for various uses including a broody pen or room. It is bigger than a broody needs, but nice that she can walk around a bit without tracking that good old broody poop all over.