Despite them being a EU member state, they don’t use Euro as their official currency. Since they have their own currency being the Zloty which is considered stable, but even if you have Euros or US Dollars for converting to Zloty: does purchasing power hold up since both Euro & US Dollar possesses a higher rate? I figure that Warsaw will be expensive due to it being the capital, so that is expected.
We went to Gdańsk in May 2023, let me tell you it was soooo affordable/cheap, esp coming from Norway. Amazing comfort food, sweet people, beautiful sights and the WW2 museum was amazing, and we aren’t usually museum people. Big recommend! Sopot (I think that’s the spelling) is a little beach town right outside Gdańsk and it’s also really nice!