i have a raised coop, approximately 30 inches off the ground. it is approximately 6 x 6 feet, small, but keeps my 6-8 birds comfortable. i cannot get inside it, it is accessed thru a large door on one of its sides. it has a smaller door inside the run for the birds to enter and exit. the only problem i see with mine is the inability to actually get inside the coop, wich with the plans i used, is by design.
when i access the coop from the large acess door, it is sometimes difficult to deal with an agressive rooster, since he is almost at eye level. mine became agressive with age and it was no fun tending to the coop and birds with him around. my wife refused to after he atttempted to attack her recently. he has sinced been rehomed. That is my one complaint with it, other than that. i like it alot and the other pros that people have listed, i agree with....
good luck