I have one of these because it was the only thing I could get quickly for a couple chicks that couldn't integrate into my main flock. The coop is TINY as others have said.
Good things: for me it was good for growing out a couple chicks and later for integrating a single hen with a larger flock while keeping her protected. Basically I found it good for temporary usage. Personally I think it would even be cramped for bantams long term unless it was only a sleeping space for a couple birds. Adding a predator skirt is pretty easy if you use metal zip ties to connect the hardware cloth to the bottom rails. Cleaning the coop interior is also pretty easy with a long-handled litter scoop via the back lift-up door and the smaller side doors.
Bad things: inner roost is awkwardly placed depending on the exact size of the birds, the area under the coop is hard to clean and is prone to accumulating a lot of bedding, and the setup isn't light enough to easily move it aside for regular cleaning. There's very little room for a traditional feeder and waterer, which can also be hard to access depending on where they have to be placed to avoid the birds kicking them over. Ventillation is minimal, and predator proofing beyond a skirt is not entirely easy. The latches it comes with are not predator proof; adding better ones is harder than with a wooden coop because you have to be more careful about where you drill the holes, and bolts are required in many places rather than screws. The vents on mine weirdly aren't in the pictures on the site - there are typically two vents, one on each side above the doors. Those vents unfortunately will let rain in when open (which they should always be) unless you add a curved vent cover. If those vents are now absent in the design you'd need to add some in that triangular area. above the side doors. The pop door also doesn't latch and is difficult to open as-is; I replaced it with an Omlet auto door on mine I didn' thave to reach through and fish around.
I also have one other prefab, a Superior Construction XL - being walk-in makes a huge difference for run cleanability.
