I like the raised coop because it gives them more total square footage and shade if they want it. They also like to get under there when its raining.
As for cleaning, I put in a clean out door. It is on hinges and I keep it up in the summer for ventilation. I have 1/2 hardware cloth, mounted in a wood frame over the opening. It is easy to remove and sweep the shavings/waste out the side into a wheelbarrow. The bottom of the opening is flush with the floor. The floor is covered in linoleum and it takes about 5 minutes to clean it out

As for cleaning, I put in a clean out door. It is on hinges and I keep it up in the summer for ventilation. I have 1/2 hardware cloth, mounted in a wood frame over the opening. It is easy to remove and sweep the shavings/waste out the side into a wheelbarrow. The bottom of the opening is flush with the floor. The floor is covered in linoleum and it takes about 5 minutes to clean it out