The design of this coop is very good. One of the best features is the sweep out door. That will be very useful.
An improvement would be the run space; it could be a little bigger.
A great thing about this coop is the adequate amount of ventilation.
One thing that I would change about depending on the number of chickens housed the space indoors. It looks like it has enough space for about 3 birds, so if you are housing more I would increase the space.