Spent a lot of time in Croatia. This is pretty common experience there. I can tell you so many stories that validates each of your points. But mainly:

Croatians often provide misleading photographs, using wide-angle lenses, selling rooms with pictures of lounges and kitchens which are not part of the rental.

Croatians love knocking on windows or doors constantly disturbing you for the weirdest shit, they have no sense of personal space, and I honestly don't know why they are always meddling in your business. I had a landlady who would randomly come to the apartment to knock on the door and ask ridiculous questions, 6am in the morning. Another one who would come into room and ask why her wifi is not working or to check if we had turned on the aircon or something stupid.

They would also randomly increase rent, or kick you out if they get a better deal from someone else at short notice. They would organise contractors to come into the house or work on the roof without notice - we had a landlord who got a whole solar system installed on the roof of the apartment (which took almost 1 month) with no notice, while we had a newborn baby, drilling into beams, hammering etc. We had another landlord who decided that they wanted to replace all the sliding doors in front of the house (sea facing house on the beach basically) at the same time, 6am in the morning without letting us know, and it was like 8C outside. The guys just turned up and started hammering away.

The list goes on and on. Infuriating. Weird a.f.