One room, one bedroom, first floor - getting around real estate terms in Argentina

I have been monitoring real estate ads for a few years and I still haven’t figured out how they classify properties.

A monoambiente (studio) is one room where you eat, sleep and live, plus a separate bathroom. Some ads categorize this as “1 ambiente, 1 dormitorio”, as the only room is also the bedroom.
Others consider this a “1 ambiente, 0 dormitorio” as there is no separate bedroom.

The other kind of property that is mis-categorized (at least in my opinion) are the so called “duplex”. It is the same thing as a studio, but usually the ceiling is so high, that they have made an elevated floor, which is where you usually sleep.

They are advertised as “dos ambientes” but you don’t have two separate rooms, as the upper floor doesn’t have doors or window.

The apartment below ours just sold for $110k (they started at $145k in September, on Jan it was 120k). We were interested in acquiring it but it was a duplex with a low ceiling upstairs. My husband is 1.82 meters and the ceiling was literally three fingers above is head.
To change clothes, you had to sit on the bed or bend. It was advertised as a “duplex dos ambientes”, which I found a bit ludicrous.

We didn’t go for it as the low ceiling was too much a hassle to rent or sell. I saw the new owner and he is 1.60 m short, so he must be happy.