There's a reason why they're difficult to find: we like to keep hold of them
!
I find the aft cabin is luxurious for my 6'1" somewhat (unfortunately) generous frame and quite happily relinquish the forepeak 'owners' cabin' to guests. The saloon sleeps two in comfort (some literature suggests it's a single berth). 5 adults is the realistic maximum you'd want aboard. The shower compartment is amazing but it is a shame it drains into the rest of the heads: an opportunity missed in my opinion.
In addition to windows try to find out about the condition of the plywood stringers the chainplates are bolted to. You may not be able to inspect them as they are behind built-in furniture but they can rot if the chainplate deckplate sealant goes.
Check the condition of the mast compression post base. There is some variation in the lumber holes draining the bilge sections towards the centre bilge and the post can sometimes be standing in water.
Inspect how tightly routed the throttle control morse cables from the outer helm are. Mine were too short and curved beyond design spec and over time deformed both the control and the throttle lever, resulting in much expense then replaced and the throttle disassembled itself once the tension was released.
Read other owners' comments on the condition of keel bolts and you'll probably come to the same conclusion I did: they are rarely a cause for concern regardless of what the surface may look like.
Happy hunting!
Paul