Mine has a small kitchenette area, a sitting area by a wood burning stove, and a DIY area. I'd say it's theme is just "realistic" lol
I have it decorated with little things I love such as dried flowers, Russian nesting dolls, a sugar skull radio, and an old cuckoo clock like my grandmother's.
I don't know what I want to do with the main room of my house... At the moment, it just looks like a normal living room. I personally find it kind of awkward to decorate because of all the side passages.