Hi
I have not had a coop from that site, but I ordered one similar from Ebay, a premade flatpack job. It has all the functions to make it great for chickens IMO - easy access to clean out all areas, a sliding out tray to clean the much, removable perches to help clean down, sliding window . . .
BUT, after 7 months and lots of wet weather it is warping quite beautifully, my OH has had to nail parts back down and make small repairs etc - it is basically cheap and cheerful.
It also came with a detached run so we could move it about the garden to protect the grass. This has not helped - if they are on the same patch for more than 2 days it is destroyed (we have 3, started with 5, in a fairly large run) and if it rains hard they are trampling through a bog within hours. CHickens are highly destructive.
We now intend to 1. put some more weather protection paint on it and 2. make a larger, permanent run with a roof over part to protect the ground and the house.
I would now, if buying a new one, take a serious look at stronger structures, and also possibly the plastic coops you can get as they are easy to clean and keep out redmite. I have also spent some time on the Omlet forums looking at their overly luxurious and expensive idea of a walk in run - we are going for something a lot more basic!