I obviously have no idea of your specific layout - but what's above or behind the preferred wall? Might just be a feed from the bathroom could be simpler than you first realised.
Or maybe not ....
I've had a Bosch one for about 3 years now - plumbed in so ice [crushed or chunks] and chilled water on tap [literally] - ice is great for drinks [and the occasional sports injuries]. The ice making unit does take up some freezer space but we also have a chest freezer in the garage so not an...