I think the points that you make about space and comfort are quite valid. The ones on finish and build quality are best left alone as these are aspects that will have more personalised views.
Bolero is quite a smart vehicle and the sales charts will point in the same direction. Also, vehicles are targetted towards a particular market. I seriously feel you should never look at buying one, new or used - You won't even be able to live with it forget Living happily ever after...
I have something in mind for you - Swift VDI. It gives you oodles of torque, is a CRDI motor and the interiors you can rave about. Just don't take it off the road..