Hi BIkerene,
regarding the cleaning, the roof of the coop lifts off, the floor of the coop slides out, the front door opens and the nest box roof lifts up. If you want to do a deep clean in you can just remove the 12 lond woodscews that hold it together, scrum it out and leave it to dry in the sun.
regarding the perches, the roosting bars are set at a hight that prevents them pooping on the heads of any birds who are not on the pearch. as the coop is up off the ground I found that mine were happy to pearch on them as they weren't getting any drafts or cold striking up from the floor. We did put a couple of batons in it and tried putting the perches higher but my birds wernt too keen. the lighter birds liked them (the hamburghs and the chicks) but the heavier birds didn't like jumping down.
When I got my first hens I found that this type of coop was on ebay for £90 complete with run and I only wanted a few hens in my garden so it was sufficient. I have moved house since and have much more space so my hen numbers have increasd as has my hoby of hatching chicks. I recently bought a shed and am building a run which will accomodate more birds but will cost much more than the ebay coop. I still use the little coops though so they have been a good investment for me.
Thing that I have found is that chickens are like people, they are all different!
They are also adaptable and grow fond of anything familiar. Im sure that as long as you get something that is water proof and draft free and that is well ventilated and easy to clean, your birds will be very happy.
If you happen to be in Yorkshire sometime before you need to buy your coop, you would be welcome to have a look at mine and make your own mind up.
Buffy