Pro's and con's with both options. It really is horses for courses
My kennel/run does have an added run. My rabbits are in the garden all day but when we go away and someone else looks after them, we can add on the extra space, accessed by the stable doors, and remove it at all other times.
The run is very, very easy to clean. This is prob one of the advantagous points as it is raised off the ground ever so slightly and so everything can be washed away, if necessary, into the gutter we have created at the back of the run. I have put good quality 'plastic window type thingy' over 95 per cent of the open window space to prevent draughts and rain driving through. Where height is concerned, I do probably stoop a little but had to think about that, as I was unaware until I thought about it. So not a problem for me.
The hutch is less easy to access, mainly because of our set-up in the 'kennel' area, which of course has a floor. It need not necessarily be so though. In actual fact our rabbits make little or no mess at all in the hutch area so it does not need to be cleaned out at all, or very rarely if that. I would have put a photo of the hutch area up, but my husband is away at the moment and has the camera :roll:
I particularly like the run as it does not feel enclosed, is very bright and airy and the rabbits can sit on the chairs and have a good viewpoint outside. Stable doors on whichever accomodation, shed or run, are brilliant