i would also like to know about the experience of eating at restaurants in poland as well as home cooked meals
This will not help your cause but in Poland the messure of a good restaurant is based on the food not the decor. Many a Polish restuaranteer do not posess the financial resources to create fancy decors.
If i were you I would go with the Zakopane theme, traditional wooden interior with absoluetey lavish wooden interior designs consisting of huge wooden benches and chairs, huge tree trunks chain sawed and made into stools for the bar with graphic symbols of Polish history carved into the sides and painted. Heavy cast iron candle holders, heavy cast iron napkin holders, a huge natural fire place. Try to create a traditional Polish atmosphere with the emphasis being on over the top Polish country feel. Loads of artificial flowers dangling all over the place with big chunky beer galsses added to the equation.
Thats what I like anyway.