To me, they look great. You get the sense that the Battanians are the autocthonous inhabitants of Calradia, with their cyclopean Bronze Age rock castles all ruined and diminished after centuries of defensive war against the Empire and the Vlandians, hastily rebuilt time after time in timber... I like them a lot.
I think that all the factions' settlements look good. I would have liked to see stone castles with the Vlandians (sure, they represent motte-and-baley kind of early Normans, but they already dress like 13th Century Normans, why can't they have 13th Century stone castles?
Or, even better, have their earliest settlemens look like what they ACTUALLY ARE: Imperial towns fallen into disrepair and brought back up by Vlandian stonemasonry. You know, like... London? Winchester? Gloucester? Rouan and Caen? I'm a bit disappointed that those cities like Pravend, which were supposed to have been big Imperial towns, are only wigwams of wood with stone foundations. I expected some Imperial ruins here and there.
Then, the eastern Vlandian towns, the newer ones like Sargot or Ocs Hall could look like motte-and-baley wooden forts. That's ok.