"Do you mean that being habitable without air conditioning is a negative feature?"

in a specific climate, sure. but in other climates high ceilings might just be a burden on the air conditioning system

I didn't say that. Maybe I haven't phrased it correctly but it was meant to be understood like "despite lots of vertical space, nice ceilings, etc". These are nice things but it doesn't really matter if the floor space is illogical, the kitchen is barely larger than a small wardrobe and you have a piece of corridor that barely has any purpose, is difficult to organize and is only wasting space.