Wuest’s literal translation of the New Testament renders the term commonly rendered as “inn,” as “caravansary.”
It was the rough equivalent of today’s motel. The horsepower being actual horses (and camels etc.) there was provision for them. Looks like there was no more human quarters but they were told fine, they could stay in the animal quarters.
So it would be KIND of a stable. By the time the Magi appeared they had moved on to a house of some kind.
More like truck stop/fairgrounds/flea market... It would be a flat field of some size, where the caravan operators would take the burdens off their animals, set up their tents, sell goods to shop owners, etc. But it would also be where the overflow of people would go during town festivals, necessarily close to town with a good water source...
So it would be KIND of a stable.
What you seek is an artifact of nearly every nativity scene you have ever seen - a roughly made temporary building with three sides and a straw roof - What you see before you is a sukkah - the structure every Hebrew family is to build and live in during Sukkot - The Feast of Tabernacles...